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:
Tom has 30 violet balloons , he gave Fred 16 of the balloons . How many violet balloons does he now have ?
answer:
14


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:
Eve ran 0.7 mile and walked 0.6 mile . How much farther did Eve run than walk ?
answer:

0.1