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.

Ex Input:
This afternoon Craig left school , rode the bus 3.8333333333333335 miles , and then walked 0.16666666666666666 mile to get home . How much farther did Craig ride than walk ?

Ex Output:
3.6666666666666665


Ex Input:
David removes 7 eggs from a jar . There were originally 27 eggs in the jar . How many eggs are left in the jar ?

Ex Output:
20


Ex Input:
Keith picked 3 pears and Jason picked 2 pears from the pear tree . Joan picked 5 apples from the apple tree . How many pears were picked in total ?

Ex Output:

5