Task: Formula-prediction-context (source dataset: cisco-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   |
|---:|:----|:---------------------------|:----------------------------------------------------|:---------------------------------|:-------------------|:-------------------|:--------------------------------------------------|:----|:----|:----|:----|
|  2 |     |                            | EnergyWise Annual Cost Savings Calculator per Store |                                  |                    |                    |                                                   |     |     |     |     |
|  3 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
|  4 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
|  5 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
|  6 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
|  7 |     | STEP 1: Enter data in the  | # of Devices                                        | Estimate Device Savings per Year | Total Savings for  | Total Savings for  |                                                   |     |     |     |     |
|    |     | Devices column             | (enter date here)                                   |                                  |  1 Year            | 3 Years            |                                                   |     |     |     |     |
|  8 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
|  9 |     | Laptop                     | 10                                                  | 15.330000000000004               | 153.30000000000004 | 459.9000000000001  |                                                   |     |     |     |     |
| 10 |     | Kiosk                      | 10                                                  | 26.280000000000005               | 262.80000000000007 | 788.4000000000002  |                                                   |     |     |     |     |
| 11 |     | Desktop PC                 | 10                                                  | 78.84                            | 788.4000000000001  | 2365.2000000000003 |                                                   |     |     |     |     |
| 12 |     | Digital Display            | 12                                                  | [Target Cell]                    | 367.9200000000001  | 1103.7600000000002 |                                                   |     |     |     |     |
| 13 |     | Cisco IP Phone             | 25                                                  | 4.380000000000001                | 109.50000000000001 | 328.50000000000006 |                                                   |     |     |     |     |
| 14 |     | Cisco AP                   | 12                                                  | 5.343600000000001                | 64.12320000000001  | 192.36960000000005 |                                                   |     |     |     |     |
| 15 |     | IP Camera                  | 12                                                  | 4.8180000000000005               | 57.816             | 173.448            |                                                   |     |     |     |     |
| 16 |     | POS terminal               | 12                                                  | 26.280000000000005               | 315.36000000000007 | 946.0800000000002  |                                                   |     |     |     |     |
| 17 |     | Compact switch             | 15                                                  | 54.312000000000005               | 814.6800000000001  | 2444.04            |                                                   |     |     |     |     |
| 18 |     | POS connects *             | 24                                                  | 13.140000000000002               | 315.36000000000007 | 946.0800000000002  | *tbd: Scanners, printers                          |     |     |     |     |
|    |     |                            |                                                     |                                  |                    |                    | (More to be added: Smart PDUs, Vending machines,  |     |     |     |     |
|    |     |                            |                                                     |                                  |                    |                    | Scales, RFID readers, New partners)               |     |     |     |     |
| 19 |     |                            |                                                     |                                  | 3249.259200000001  | 9747.7776          |                                                   |     |     |     |     |
| 20 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
| 21 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |
| 22 |     |                            |                                                     |                                  |                    |                    |                                                   |     |     |     |     |



min_row: 2
max_row: 22
min_col: 1
max_col: 11
target_cell_row_idx: 12
target_cell_col_idx: 4
target_cell_value: 30.660000000000007
formula: =SUM(I30)