Task: Formula-prediction-context (source dataset: ti-random)

You are given an table region extracted from a real Excel spreadsheet, which is centered around a cell called "Target Cell" (labeled as "[Target Cell]" shown in the table below). The table region below includes up to 10 rows above/below the Target Cell, and 10 columns to the left/right of the Target Cell. 

Your task is to analyze the table context surrounding the Target Cell, and predict the most likely Excel formula that should go in the Target Cell. If multiple formulas are possible, choose the most reasonable or commonly used based on context.

1. Please follow the standard formula syntax in Excel, e.g. always begins with an equal sign (=).
2. Base your predicted formula on the surrounding table context, e.g., column headers, annotations, and data values in nearby cells.
3. No explanation — just output the formula itself in a JSON format: {"formula": "your_formula_here"}.

Input Excel Snippet in Markdown format:
|    | H                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | I     | J         | K     | L         | M     | N    | O     | P                  | Q                    | R                     | S                  |
|---:|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:------|:----------|:------|:----------|:------|:-----|:------|:-------------------|:---------------------|:----------------------|:-------------------|
|  1 | Providing start and stop from 2 Agilent Function Generators and measuring the time using TPL7200. Input clock (8MHz) is also from the Sanford. Register 1 is set to 0x40, so number of CAL cycles chosen is 10. Calculations are according to the equation in the slides from Chris Kraft. Note: 255 measurements were made using the EVM mode 2, but about 15 measurements whose showned CLKcount1 = 320, were thrown away. For raw data see document teraterm_log01 |       |           |       |           |       |      |       |                    |                      |                       |                    |
|  2 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |       |           |       |           |       |      |       |                    |                      |                       |                    |
|  3 | CLKcount3                                                                                                                                                                                                                                                                                                                                                                                                                                                             | Time4 | CLKcount4 | Time5 | CLKcount5 | Time6 | CAL1 | CAL2  | calCount           | normLSB              | Time Measurement (ns) |                    |
|  4 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |       |           |       |           |       | 2195 | 21941 | 2194               | 0.05697356426618049  | [Target Cell]         |                    |
|  5 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2193 | 21938 | 2193.8888888888887 | 0.0569764497341099   | 40118.162826031905    | 0.3678225804855025 |
|  6 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2190 | 21914 | 2191.5555555555557 | 0.057037112147637396 | 40117.29998986007     |                    |
|  7 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2193 | 21926 | 2192.5555555555557 | 0.0570110981604419   | 40117.3605128465      |                    |
|  8 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2195 | 21935 | 2193.3333333333335 | 0.05699088145896656  | 40117.59118541033     |                    |
|  9 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2193 | 21937 | 2193.777777777778  | 0.05697933549432739  | 40117.47872771475     |                    |
| 10 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2192 | 21930 | 2193.1111111111113 | 0.056996656196169816 | 40117.19145810112     |                    |
| 11 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2192 | 21933 | 2193.4444444444443 | 0.05698799452915253  | 40117.306620738564    |                    |
| 12 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2193 | 21934 | 2193.4444444444443 | 0.05698799452915253  | 40118.10445266197     |                    |
| 13 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2192 | 21918 | 2191.777777777778  | 0.057031329210179456 | 40117.75702119031     |                    |
| 14 | 0                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0     | 0         | 0     | 0         | 0     | 2191 | 21926 | 2192.777777777778  | 0.05700532049657968  | 40117.24727641247     |                    |



min_row: 1
max_row: 14
min_col: 8
max_col: 19
target_cell_row_idx: 4
target_cell_col_idx: 18
target_cell_value: 50117.023701002734
formula: =$Q4*($C4-$E4)+($A4 * $D4)