instruction:
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.
question:
Keith spent $6.5 on a rabbit toy, $5.79 on pet food, and a cagecost him $12.51. He found a dollar bill on the ground. What was the total cost of Keith's purchases?
answer:
24.8


question:
An oil pipe in the sea broke. Before engineers started to fix the pipe,2475 gallons of oil leaked into the water. A total of 6206 gallons of oilleaked before the pipe was fixed. How many gallons of oil leakedwhile the engineers were fixing the pipe?
answer:
3731.0


question:
Tom found 7 seashells but 4 were broken. How many unbrokenseashells did Tom find?
answer:

3.0