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.

Ezra drew a white line that was 7.666666666666667 inches long . Then he drew a blue line that was 3.3333333333333335 inches long . How much longer was the white line than the blue line ?
4.333333333333333

Sally grew 6 carrots . Fred grew 4 carrots . How many carrots did they grow in all ?
10

Mary has 9 yellow marbles Joan has 3 yellow marbles . How many yellow marbles do they have in all ?

12