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: penny 's class is going to animaland the largest zoo on earth for their science field trip . the zoo has a variety of wild animals in captivity . their first destination was the aviary . the aviary has 3 species of eagles on show that day . they have 20 bald eagles 15 harpy eagles and 30 crowned eagles . how many eagles are on display that day ?

Output: 65

Input: Consider Input: there are a total of 90 items at a bakery . 49 of them are bread rolls and 19 of them are croissants . how many bagels are there ?

Output: 22

Input: Consider Input: laurie has 12 more marbles than kurt . kurt has 45 marbles less than dennis . dennis has 70 marbles . how many marbles does laurie have ?
Output: 37