1-What you tell someone when they can't
figure out what someone or something actually means before
explaining it to them
2- To figure out what will happen because of a certain
event
1-Person 1: Why do you think my mom's a ho?
Person 2: Dude,
do the math, she goes out every night wearing a
tube top and a thong.
2-Person 1: "So why do you think she's going to break up with me?"
Person 2: "
Do the math, man. She's moving to another state. You can try to
keep it together but eventually she's gonna dump you"