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.

[Q]: Joan found 72 seashells and 12 starfishes on the beach. She gaveAlyssa some of her seashells. She has 28 seashell. How manyseashells did she give to Alyssa?
[A]: 44.0


[Q]: There were 9 red orchids and 3 white orchids in the vase. Sally cutsome red orchids from her flower garden. There are now 15 redorchids in the vase. How many red orchids did she cut?
[A]: 6.0


[Q]: Last year, 90171 people were born in a country, and 16320 peopleimmigrated to it. How many new people began living in the countrylast year?
[A]:
106491.0