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:
| Unnamed: 0                   | 2018         | 2017       |
|:-----------------------------|:-------------|:-----------|
| current expense ( benefit )  | $ -70 ( 70 ) | $ 112      |
| deferred expense ( benefit ) | 226          | -97 ( 97 ) |
| total expense                | $ 156        | $ 15       |
| effective income tax rate    | 17% ( 17 % ) | 2% ( 2 % ) |

Question:
what was the ratio in the total tax expense from 2018 to 2017


pre_text: the remaining change in other expense was driven primarily by changes on foreign currency exchange instruments as further discussed in note 7 in 201citem 8 .
financial statements and supplementary data 201d of this report .
income taxes .
post_text: for discussion on income taxes , see note 8 in 201citem 8 .
financial statements and supplementary data 201d of this report .
discontinued operations discontinued operations net earnings increased primarily due to the gain on the sale of our aggregate ownership interests in enlink and the general partner of $ 2.6 billion ( $ 2.2 billion after-tax ) .
for discussion on discontinued operations , see note 19 in 201citem 8 .
financial statements and supplementary data 201d of this report 201d of this report .
results of operations 2013 2017 vs .
2016 the graph below shows the change in net earnings from 2016 to 2017 .
the material changes are further discussed by category on the following pages .
to facilitate the review , these numbers are being presented before consideration of earnings attributable to noncontrolling interests .
$ 1308 ( $ 165 ) ( $ 4 ) $ 1 $ 63 $ 400 ( $ 397 ) $ 126 $ 1204 ( $ 1458 ) $ 1078 2016 upstream operations marketing operations exploration expenses dd&a g&a financing costs , net other ( 1 ) income discontinued operations net earnings ( 1 ) other in the table above includes asset impairments , asset dispositions , restructuring and transaction costs and other expenses .
the graph below presents the drivers of the upstream operations change presented above , with additional details and discussion of the drivers following the graph .
( $ 427 ) ( $ 427 ) $ 1395$ 1 395 $ 2176$ 2 176 $ 3484 2016 production volumes field prices hedging 2017 upstream operations expenses .
label: 10.4
qa: answer: 10.4
ann_table_rows: 3
steps: op: divide1-1
arg1: 156
arg2: 15
res: 10.4
program: divide(156, 15)
gold_inds: table_3: the total expense of 2018 is $ 156 ; the total expense of 2017 is $ 15 ;
exe_ans: 10.4
tfidftopn: table_4: The effective income tax rate of 2018 is 17% ( 17 % ) ; The effective income tax rate of 2017 is 2% ( 2 % ) ;
table_1: The current expense ( benefit ) of 2018 is $ -70 ( 70 ) ; The current expense ( benefit ) of 2017 is $ 112 ;
program_re: divide(156, 15)
model_input: table_1
the current expense ( benefit ) of 2018 is $ -70 ( 70 ) ; the current expense ( benefit ) of 2017 is $ 112 ;
table_3
the total expense of 2018 is $ 156 ; the total expense of 2017 is $ 15 ;
text_11
to facilitate the review , these numbers are being presented before consideration of earnings attributable to noncontrolling interests .