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.

[Q]: Melanie picked 7 plums and 4 oranges from the orchard . She gave 3 plums to Sam . How many plums does she have now ?
[A]: 4


[Q]: Jacqueline has 4 boxes of erasers . Each box holds 10 erasers and there are 9 boxes in a case . How many erasers does Jacqueline have ?
[A]: 40


[Q]: Tom found 5 seashells on the beach . he gave Jessica 2 of the seashells . How many seashells does he now have ?
[A]:
3