You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Kaleen filled a bucket with 0.75 gallon of water . A few minutes later , she realized only 0.5 gallon of water remained . How much water had leaked out of the bucket ?
0.25

A teacher had 34 worksheets to grade . If she graded 7 , but then another 36 were turned in , how many worksheets would she have to grade ?
63

Jack starts with 62 marbles . He shares 33 with Rebecca . How many marbles does Jack end with ?

29