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 |
|-------:|:-------|:------------------|:-------------------------------------------------------------|------:|:--------------|-----:|
| 854626 | 920.00 | A-WX-PTS-SCTR-OVR | Support Center Overage (1)                                   | 20    | 12.8          | 0.36 |
| 854627 | 920.00 | A-WX-STORAGE-ADD  | Add-on Storage (1)                                           |  2    | 1.28          | 0.36 |
| 854628 | 920.00 | A-WX-STORAGE-INC  | Included Storage (1)                                         |  0    | 0             | 0.36 |
| 854629 | 920.00 | A-WX-STORAGE-OVR  | Enable Storage Overage (1)                                   |  3.63 | 2.32          | 0.36 |
| 854630 | 920.00 | A-WX-TA-TNU-BCT   | Bridge Country Toll (1)                                      |  0    | 0             | 0.36 |
| 854631 | 920.00 | A-WX-TA-TNU-IT    | Global Toll (1)                                              |  0    | 0             | 0.36 |
| 854632 | 920.00 | A-WX-TSP-AUDIO    | Enable TSP Audio (1)                                         |  0    | 0             | 0.36 |
| 854633 | 920.00 | A-WX-US-TA-BCCB   | Bridge Country Call-back (1)                                 |  0.22 | 0.14          | 0.36 |
| 854634 | 920.00 | A-WX-US-TA-BCT    | Bridge Country Toll Call-in (1)                              |  0.05 | 0.03          | 0.36 |
| 854635 | 920.00 | A-WX-US-TA-BCTF   | Bridge Country Toll Free Call-in (1)                         |  0.22 | 0.14          | 0.36 |
| 854636 | 920.00 | A-WX-VOIP         | WebEx VoIP (1)                                               |  0    | [Target Cell] | 0.36 |
| 854637 |        | A-WX-ACTIVE-USER  | Spark Active User (with WebEx) (1)                           |  0    | 0             | 0.36 |
| 854638 |        | A-WX-AU-EE-1K     | Active User Spark Meet (with Enterprise Edition 1,000) (1)   | 45    | 28.8          | 0.36 |
| 854639 |        | A-WX-AU-IM        | Standalone Spark Message and WebEx Active User Messenger (1) | 17    | 10.88         | 0.36 |
| 854640 |        | A-WX-AUIM-INC     | Included Spark Message and Active User Messenger (1)         |  0    | 0             | 0.36 |
| 854641 |        | A-WX-AU-MTGS-1K   | Active User Spark Meet (with Meeting Center 1,000) (1)       | 44    | 28.16         | 0.36 |
| 854642 |        | A-WX-AU-RMSTG-INC | Spark Message Included Storage (1)                           |  0    | 0             | 0.36 |
| 854643 |        | A-WX-AU-RMSTG-OVR | Spark Message Storage Overage (1)                            |  3.63 | 2.3232        | 0.36 |
| 854644 |        | A-WX-CS-TOLLUSER  | Use new Toll User skus. This sku will be end of sale (1)     |  8    | 5.12          | 0.36 |
| 854645 |        | A-WX-EC-EE-1K     | Emp. Count Spark Meet (Enterprise Edition 1,000) (1)         | 28    | 17.92         | 0.36 |
| 854646 |        | A-WX-EC-MTGS-1K   | Emp Count  Spark Meet (withMeeting Center 1,000) (1)         | 25    | 16            | 0.36 |



min_row: 854626
max_row: 854646
min_col: 1
max_col: 6
target_cell_row_idx: 854636
target_cell_col_idx: 5
target_cell_value: 0
formula: =(1-F854636)*D854636