You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Given a question as input, give its short_answer as the output 

1000 days is how many years?
Solution: 2.73973
Why? The output is the short_answer of the given input question based on the conversion formula days ÷ 365 = years

New input: 1/2 gallon how many liters?
Solution:
1.89271