>>12921931let's do basics of multiplication.
take 4 women, each has a pair of tits.
together, that makes 4 x 2 = 8 tits.
take away two women, that's -2 x 2 = -4 -> we lost 4 tits.
now, go back to 8 tits from for women.
add 3 men to this -> 3 x -2 (each man has 2 hands to grab 2 tits with). we lost 6 tits, we're only left with 2.
start with the last result of 2 tits. take away 2 men
-> -2 (two men being taken away) x -2 (each one would grab 2 tits) -> -2 x -2 = 4 tits that are up for grabs.
now generalize this for any set of breasts on a woman, and you're sorted.
hope this helps clear it up.