You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Let me give you an example: Last year , 90171 people were born in a country , and 16320 people immigrated to it . How many new people began living in the country last year ?
The answer to this example can be: 106491
Here is why: Total people living in the country = born - immigrated = 90171 - 16320 = 106491

OK. solve this:
Emily collects 63 cards . Emily 's father gives Emily 7 more . Bruce has 13 apples . How many cards does Emily have ?
Answer:
70