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:
in the first half of a trivia game kaleb scored 43 points . in the second half he scored 23 points . how many points did he score total ?

Ex Output:
66

Ex Input:
john was drawing super heroes 1 sheet of scrap paper . he drew 15 pictures total . if he drew 9 on the back . how many heroes did he draw on the front ?

Ex Output:
6

Ex Input:
ralph has a photo album with 50 pages . he has 26 pictures of wild animals . ralph 's friend derrick has 34 pictures of wild animals . how many fewer pictures of wild animals does ralph have ?

Ex Output:
8