instruction:
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.
question:
Joan picked 43 apples from the orchard , and gave 27 apples to Melanie . How many apples does Joan have now ?
answer:
16


question:
13 ducks are swimming in a lake . 20 more ducks come to join them . How many ducks are swimming in the lake ?
answer:
33


question:
Sara grew 43 pumpkins , but the rabbits ate 23 pumpkins . How many pumpkins does Sara have ?
answer:

20