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]: A bee has 6 legs . How many legs do 8 bees have ?
[EX A]: 48

[EX Q]: Mary had 33 Pokemon cards , and 6 were torn . Sam gave Mary 23 new Pokemon cards . How many Pokemon cards does Mary have now ?
[EX A]: 56

[EX Q]: Carla has some marbles . She bought 489 marbles . Now she has 2778 marbles all together . How many did she start with ?
[EX A]:
2289