STEM STUDENT, IDK HOW TO DIVIDE OR BASIC MATH

Gois help me ok I'm literally dying, I don't know how I passed the damn exam but YO, the moment I stepped into the classroom, deadass everybody was speedsolving rubix cubes and were doing alk that smart stuff, like, daym, went for stem to know my physics and to get good foundation for architecture, didn't know Stem student's game😭