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                   |
|---:|:-----------------------------------------------------------------------------------------------------------------------|:--------------|:------------------------------------------------------------|:-------------------|:--------------|:--------------------|
|  1 |                                                                                                                        |               |                                                             |                    |               |                     |
|  2 |                                                                                                                        |               |                                                             |                    |               |                     |
|  3 |                                                                                                                        |               |                                                             |                    |               |                     |
|  4 |                                                                                                                        |               |                                                             |                    |               |                     |
|  5 | Base Price List in USD - Effective: 14-Aug-2013                                                                        |               |                                                             |                    |               |                     |
|  6 | For 30 day lead time availability and for additional quantities, please contact your Remarketing Sales Manager.        |               |                                                             |                    |               |                     |
|  7 | This report contains point-in-time data and may be out-of-date. For realtime quantities and list prices, please visit: |               |                                                             |                    |               |                     |
|  8 | All contents copyright © 2011 Cisco Systems, Inc.                                                                      |               |                                                             |                    |               |                     |
|  9 |                                                                                                                        |               |                                                             |                    |               |                     |
| 10 | RF PID                                                                                                                 | New PID       | Description                                                 | New PID List Price | RF List Price | RF Discount %       |
| 11 | 10000-1P2-1AC-RF                                                                                                       | 10000-1P2-1AC | C10000 8-slot chassis,1 PRE2, 1 AC PEM REFURBISHED          | 50750              | 17500         | [Target Cell]       |
| 12 | 10000-1P2-1DC-RF                                                                                                       | 10000-1P2-1DC | C10000 8-slot chassis,1 PRE2, 1 DC PEM REFURBISHED          | 50750              | 17500         | 0.6551724137931034  |
| 13 | 10000-1P3-1AC-RF                                                                                                       | 10000-1P3-1AC | 10000 8-slot chassis, 1 PRE3, 1 AC PEM REFURBISHED          | 58750              | 20259         | 0.6551659574468085  |
| 14 | 10000-1P3-1DC-RF                                                                                                       | 10000-1P3-1DC | 10000 8-slot chassis, 1 PRE3, 1 DC PEM REFURBISHED          | 58750              | 20259         | 0.6551659574468085  |
| 15 | 10000-2P2-2AC-RF                                                                                                       | 10000-2P2-2AC | 10000 8-slot chassis, 2 PRE2s, 2 AC PEMs REFURBISHED        | 75750              | 26121         | 0.6551683168316832  |
| 16 | 10000-2P2-2DC-RF                                                                                                       | 10000-2P2-2DC | 10000 8-slot chassis, 2 PRE2s, 2 DC PEMs REFURBISHED        | 75750              | 26121         | 0.6551683168316832  |
| 17 | 10000-2P3-2AC-RF                                                                                                       | 10000-2P3-2AC | 10000 8-slot chassis,2 PRE3, 2 AC PEM REFURBISHED           | 91750              | 31638         | 0.6551716621253406  |
| 18 | 10000-2P3-2DC-RF                                                                                                       | 10000-2P3-2DC | 10000 8-slot chassis, 2 PRE3, 2 DC PEM REFURBISHED          | 91750              | 31638         | 0.6551716621253406  |
| 19 | 10000-SIP-600-RF                                                                                                       | 10000-SIP-600 | 10000 Series SPA Interface Processor-600 10G REFURBISHED    | 15000              | 9052          | 0.39653333333333335 |
| 20 | 10720-FE-TX-RF                                                                                                         | 10720-FE-TX   | 24pt 10/100 Ethernet RJ45 REFURBISHED                       | 7000               | 3017          | 0.569               |
| 21 | 10720-IR-LC-RF                                                                                                         | 10720-IR-LC   | OC-48 SRP Intermediate Reach 15km Uplink Module REFURBISHED | 25000              | 8621          | 0.65516             |



min_row: 1
max_row: 21
min_col: 1
max_col: 6
target_cell_row_idx: 11
target_cell_col_idx: 6
target_cell_value: 0.6551724137931034
formula: =+(D11-E11)/D11