Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

Ex Input:
the sum of 2 numbers is 62 1 of the numbers is 27 what is the other number ?

Ex Output:
35

Ex Input:
while playing a video game victor lost 14 lives . now he has 2 lives . what 's the difference between the number of the lives that victor lost and now ?

Ex Output:
12

Ex Input:
joan is baking a cake . the recipe calls for 7 cups of flour . she already put in 3 cups . how many more cups does she need to add ?

Ex Output:
4