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.

kelly had 56 apples . how many more apples does kelly need to pick to have 105 apples altogether ?
49

a waiter had 18 customers . if 6 left how many customers would the waiter still have ?
12

aside from frogs the swamp area is also home to a few dangerous animals . penny 's teacher pointed out 22 crocodiles 23 alligators and 5 vipers . how many dangerous animals did the teacher point out in total ?

50

