Module % help

Question

We need to distribute math & history textbooks to students. There are two class section: the 1st class has 18 students; the 2nd section 19 students. The total number of books avalaibles for distribution is 76 write a program to calculate and produce how many books will be left after each student receive both books.
I had a problem i write print ( 76 % (19+18)) and its wrong ..help me please
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Answer 1

a=76%2
b=a+(2*(18+19))
c=76-b
print(c)

Answer 2

need_book = ((group1 * 2) + (group2 * 2))
remains_book = books % need_book

Answer 3

each student receives "both books", so it should be 76%((19+18)*2)