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.

Ex Input:
Mandy made an apple pie . She used 0.6666666666666666 tablespoon of cinnamon and 0.5 tablespoon of nutmeg . How much more cinnamon than nutmeg did Mandy use ?

Ex Output:
0.1666666666666666

Ex Input:
Students at Arcadia schools are participating in a coat drive . 9437 coats have been collected so far . 6922 coats were collected from the high schools , and the rest from the elementary schools . How many coats were collected at the elementary schools ?

Ex Output:
2515

Ex Input:
Joan has 9 blue balloons , Sally has 5 blue balloons , and Jessica has 2 blue balloons . How many blue balloons do they have in total ?

Ex Output:
16