You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

Ex Input:
Blake filled a bucket with 0.8 gallon of water. Later, he poured out 0.2 gallon of the water. How much water is in the bucket?

Ex Output:
0.6


Ex Input:
Keith grew 6 turnips. Alyssa grew 9 turnips. How many turnips didthey grow in all?

Ex Output:
15.0


Ex Input:
Sam has 16 blue and 25 green balloons. Alyssa has 21 blue balloons.How many blue balloons do they have in all?

Ex Output:

37.0