>>718774675
For the abacus part, this is what it looks like. Its an ancient (but very effective) tool for math. The hand motions the kid is doing is mimicing what he would be doing to solve the equation if he had the physical abacus in front of him. Imagine if you wanted to type "hey whats up you newfag nigger." You probably know where the keys are and if I took away the keyboard you could probably still accurately "type" out that sentence. Same thing, except with math