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]: There are 9 crayons in the drawer . Benny placed 3 crayons in the drawer . How many crayons are now there in total ?
[EX A]: 12

[EX Q]: Shelby ’ s teacher gives out gold stars for great math work . Yesterday , Shelby earned 4 gold stars . Today , she earned 3 more . How many gold stars did Shelby earn in all ?
[EX A]: 7

[EX Q]: Mike has 87 baseball cards . Sam bought 13 of Mike 's baseball cards . How many baseball cards does Mike have now ?
[EX A]:
74