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.

Input: Consider Input: roger went to the movies 15 times last year and 3 times this year . how many times did roger go to the movies all together ?

Output: 18

Input: Consider Input: lucy put 68 shells in her bucket . she found some more shells and now she has 89 shells . how many more did she find ?

Output: 21

Input: Consider Input: 7 red apples and 2 green apples are in the basket . how many apples are in the basket ?
Output: 9