Well we could start by making common denominators so we can subtract these two fractions.
7/8 = 35/40
2/5 = 16/40.
35/40 = 16/40 = 19/40.
19/40 = 0.475.
So about 1? Not really, since it rounds down to 0.
Close to 1? Not really, since it rounds down to 0.
Exactly? No.