You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

[EX Q]: Sara had 21 quarters in her bank . Her dad gave her 49 more quarters . How many quarters does she have now ?
[EX A]: 70

[EX Q]: Sara grew 43 pumpkins , but the rabbits ate 23 pumpkins . How many pumpkins does Sara have ?
[EX A]: 20

[EX Q]: Ronald went to the store 2 times last month . He buys 10 bananas each time he goes to the store . How many bananas did Ronald buy last month ?
[EX A]:
20