If $a=7$ and $b=13$, what is the number of even positive integers less than $ab$?
This worksheet will help you (It has the same question, too)
Um the question difficulty in those worksheets are exponentially harder than this current problem
a = 7
b = 13
ab = 7 * 13 = 91
Zero is not positive or negative, but even, so we can't count it in the problem.
So really it just is
FLOOR of \(91/2\) = 45