Task: Table-QA (source dataset: FinQA)

Task: 
You are given a table containing structured data and a natural language question referring to the table. Your goal is to analyze the table and provide an accurate and concise answer based on the given data.

Instructions:
1. Understand the Table: Examine the structure, headers, and data in the table. Identify relevant columns and rows related to the question.
2. Interpret the Question: Determine whether the question requires direct retrieval, aggregation, comparison, sorting, filtering, or inference.
3. Extract the Answer: Use logical reasoning and numerical operations (if necessary) to derive the correct response from the table.
4. Format the Answer: No explanation, return the answer in a structured JSON format: {"answer": <answer>}. If the question cannot be answered due to missing or ambiguous data, return a JSON response with {"answer": null}.

Table:
| ( dollars in millions )   | years ended december 31 2007   | years ended december 31 2006   | years ended december 31 2005   | years ended december 31 2007 20142006   | 2006 20142005   |
|:--------------------------|:-------------------------------|:-------------------------------|:-------------------------------|:----------------------------------------|:----------------|
| segment net sales         | $ 7729                         | $ 5400                         | $ 5038                         | 43% ( 43 % )                            | 7% ( 7 % )      |
| operating earnings        | 1213                           | 958                            | 860                            | 27% ( 27 % )                            | 11% ( 11 % )    |

Question:
what was the average segment net sales from 2005 to 2007 in millions


pre_text: on a geographic basis , the 1% ( 1 % ) increase in net sales reflects higher net sales in north america and emea , partially offset by lower net sales in asia .
the increase in net sales in north america was driven primarily by higher sales of digital entertainment devices , partially offset by lower demand for iden infrastructure equipment driven by customer expenditures returning to historic trends compared to an exceptionally strong 2005 .
the increase in net sales in emea was driven primarily by higher sales of digital entertainment devices .
the decrease in net sales in asia was due , in part , to delays in the granting of 3g licenses in china that led service providers to slow their near-term capital investment , as well as competitive pricing pressure .
net sales in north america continued to comprise a significant portion of the segment 2019s business , accounting for approximately 56% ( 56 % ) of the segment 2019s total net sales in 2006 , compared to approximately 55% ( 55 % ) of the segment 2019s total net sales in 2005 .
the segment reported operating earnings of $ 787 million in 2006 , compared to operating earnings of $ 1.2 billion in 2005 .
the 36% ( 36 % ) decrease in operating earnings was primarily due to : ( i ) a decrease in gross margin , due to an unfavorable product/regional mix and competitive pricing in the wireless networks market , and ( ii ) an increase in other charges ( income ) from an increase in reorganization of business charges , primarily related to employee severance , and from a legal reserve .
as a percentage of net sales in 2006 as compared to 2005 , gross margin , sg&a expenses , r&d expenditures and operating margin all decreased .
in 2006 , net sales to the segment 2019s top five customers , which included sprint nextel , comcast corporation , verizon , kddi and china mobile , represented 45% ( 45 % ) of the segment 2019s total net sales .
the segment 2019s backlog was $ 3.2 billion at december 31 , 2006 , compared to $ 2.4 billion at december 31 , 2005 .
the increase in backlog is primarily due to strong orders for our digital and hd/dvr set-tops .
in the market for digital entertainment devices , demand for the segment 2019s products depends primarily on the level of capital spending by broadband operators for constructing , rebuilding or upgrading their communications systems , and for offering advanced services .
in 2006 , our digital video customers significantly increased their purchases of the segment 2019s products and services , primarily due to increased demand for digital video set-tops , particularly hd/dvr set-tops .
during 2006 , the segment completed a number of significant acquisitions , including : ( i ) kreatel communications ab , a leading developer of innovative ip-based digital set-tops and software , ( ii ) nextnet wireless , inc. , a former clearwire corporation subsidiary and a leading provider of ofdm-based non-line-of-sight ( 201cnlos 201d ) wireless broadband infrastructure equipment , ( iii ) broadbus technologies , inc. , a provider of technology solutions for television on demand , and ( iv ) vertasent llc , a software developer for managing technology elements for switched digital video networks .
these acquisitions did not have a material impact on the segment results in 2006 .
enterprise mobility solutions segment the enterprise mobility solutions segment designs , manufactures , sells , installs and services analog and digital two-way radio , voice and data communications products and systems for private networks , wireless broadband systems and end-to-end enterprise mobility solutions to a wide range of enterprise markets , including government and public safety agencies ( which , together with all sales to distributors of two-way communications products , are referred to as the 201cgovernment and public safety market 201d ) , as well as retail , utility , transportation , manufacturing , healthcare and other commercial customers ( which , collectively , are referred to as the 201ccommercial enterprise market 201d ) .
in 2007 , the segment 2019s net sales represented 21% ( 21 % ) of the company 2019s consolidated net sales , compared to 13% ( 13 % ) in 2006 and 14% ( 14 % ) in 2005 .
( dollars in millions ) 2007 2006 2005 2007 20142006 2006 20142005 years ended december 31 percent change .
post_text: segment results 20142007 compared to 2006 in 2007 , the segment 2019s net sales increased 43% ( 43 % ) to $ 7.7 billion , compared to $ 5.4 billion in 2006 .
the 43% ( 43 % ) increase in net sales was primarily due to increased net sales in the commercial enterprise market , driven by the net sales from the symbol business acquired in january 2007 .
net sales in the government and public safety market increased 6% ( 6 % ) , primarily due to strong demand in north america .
on a geographic basis , net sales increased in all regions .
62 management 2019s discussion and analysis of financial condition and results of operations .
label: 6055.66667
qa: answer: 6055.7
ann_table_rows: 1
steps: op: add1-1
arg1: 7729
arg2: 5400
res: 13129
op: add1-2
arg1: 5038
arg2: #0
res: 18167
op: divide1-3
arg1: #1
arg2: const_3
res: 6055.7
program: add(7729, 5400), add(5038, #0), divide(#1, const_3)
gold_inds: table_1: ( dollars in millions ) the segment net sales of years ended december 31 2007 is $ 7729 ; the segment net sales of years ended december 31 2006 is $ 5400 ; the segment net sales of years ended december 31 2005 is $ 5038 ; the segment net sales of years ended december 31 2007 20142006 is 43% ( 43 % ) ; the segment net sales of 2006 20142005 is 7% ( 7 % ) ;
exe_ans: 6055.66667
tfidftopn: text_17: ( dollars in millions ) 2007 2006 2005 2007 20142006 2006 20142005 years ended december 31 percent change .
text_19: the 43% ( 43 % ) increase in net sales was primarily due to increased net sales in the commercial enterprise market , driven by the net sales from the symbol business acquired in january 2007 .
program_re: divide(add(5038, add(7729, 5400)), const_3)
model_input: text_4
net sales in north america continued to comprise a significant portion of the segment 2019s business , accounting for approximately 56% ( 56 % ) of the segment 2019s total net sales in 2006 , compared to approximately 55% ( 55 % ) of the segment 2019s total net sales in 2005 .
table_1
( dollars in millions ) the segment net sales of years ended december 31 2007 is $ 7729 ; the segment net sales of years ended december 31 2006 is $ 5400 ; the segment net sales of years ended december 31 2005 is $ 5038 ; the segment net sales of years ended december 31 2007 20142006 is 43% ( 43 % ) ; the segment net sales of 2006 20142005 is 7% ( 7 % ) ;
table_2
( dollars in millions ) the operating earnings of years ended december 31 2007 is 1213 ; the operating earnings of years ended december 31 2006 is 958 ; the operating earnings of years ended december 31 2005 is 860 ; the operating earnings of years ended december 31 2007 20142006 is 27% ( 27 % ) ; the operating earnings of 2006 20142005 is 11% ( 11 % ) ;