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.

Example Input: Mary found 2 seashells and Keith found 5 seashells on the beach.When they cleaned them, they discovered that 9 were cracked. Howmany seashells did they find together?
Example Output: 7.0

Example Input: On a hot day, Sam poured 1 bucket of water into a plastic wadingpool. A few minutes later he added another 8.8 buckets. How muchwater did Sam pour into the pool?
Example Output: 9.8

Example Input: Pamela bought 9.8 ounces of sugar, and she spilled 5.2 ounces of iton the floor. How much is?
Example Output:
4.6

