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.

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

2 birds were sitting on the fence . 4 more birds came to join them . How many birds are sitting on the fence ?
6

Heather has 60 oranges . Russell takes 35 away . How many oranges will Heather have ?

25