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.

Kenneth has 3 marbles . He buys 6 more . Later , Kenneth buys 15 apples at the store . How many marbles does Kenneth have in all ?
9

Martha starts with 3 cards . She gets 76 more from Emily . How many cards does Martha end with ?
79

Diane has 37 crayons . She gets 5 more from Frances . Later , Diane buys 16 cards at the store . How many crayons does Diane have in all ?

42