Task: Formula-prediction-context (source dataset: enron-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:
|    | A                                    | B             | C                               | D                   | E               | F   | G   | H                                | I            | J          | K         | L   |
|---:|:-------------------------------------|:--------------|:--------------------------------|:--------------------|:----------------|:----|:----|:---------------------------------|:-------------|:-----------|:----------|:----|
| 49 | Average Daily Transactions for Nymex |               |                                 |                     |                 |     |     | Week of April 23rd to April 27th |              |            |           |     |
| 50 | Week of April 23rd to April 27th     |               |                                 |                     |                 |     |     | Enter #s from WSJ                |              |            |           |     |
| 51 |                                      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 52 | Commodity                            | Volume        | Diff btwn EnronOnline and Nymex | EOL as % of Nymex   | Unit Of Measure |     |     | Commodity                        | Volume       |            | # of Days |     |
| 53 | US Financial Gas                     | 807272500.0   | -411923878.2                    | 0.48973379100613484 | MMBtu           |     |     | US Financial Gas*                | 3229090000.0 | 322909.0   | 4.0       |     |
| 54 |                                      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 55 | Weekly Transactions for Options      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 56 | Week of April 23rd to April 27th     |               |                                 |                     |                 |     |     | Get OPTIONS #s from Daily report |              |            |           |     |
| 57 |                                      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 58 | Commodity                            | Transactions  | Volume                          |                     | Unit Of Measure |     |     | Commodity                        | Transactions | Volume     |           |     |
| 59 | US Natural Gas                       | [Target Cell] | 69010000.0                      |                     | MMBtu           |     |     | US Natural Gas                   | 78.0         | 69010000.0 |           |     |
| 60 | UK Natural Gas                       | 1.0           | 920000.0                        |                     | MMBtu           |     |     | UK Natural Gas                   | 1.0          | 920000.0   |           |     |
| 61 | Total Transactions                   | 1.0           | 69930000.0                      |                     |                 |     |     |                                  |              |            |           |     |
| 62 |                                      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 63 |                                      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 64 | Weekly Transactions for Spreads      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 65 | Week of April 23rd to April 27th     |               |                                 |                     |                 |     |     | Get #s from spreads report       |              |            |           |     |
| 66 |                                      |               |                                 |                     |                 |     |     |                                  |              |            |           |     |
| 67 | Product                              | Transactions  | Unit Of Measure                 |                     |                 |     |     | Product                          | Transactions |            |           |     |
| 68 | Aluminum                             | 88.0          | mt-L                            |                     |                 |     |     | Aluminum                         | 88.0         |            |           |     |
| 69 | Copper                               | 26.0          | mt-L                            |                     |                 |     |     | Copper                           | 26.0         |            |           |     |



min_row: 49
max_row: 69
min_col: 1
max_col: 12
target_cell_row_idx: 59
target_cell_col_idx: 2
target_cell_value: 78.0
formula: =+I59