You will be given a definition of a task first, then some input of the task.
You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

david has 0 fewer apples than marin . marin has 3 apples . how many apples does david have ?
Output:
3