Good at math my arse

So I'm preparing a class for my students and I run in to this, and it made me think good and bad is subjective if this is good at math (Summing by the looks of it)...kids you ain't got to do any more shit in maths class I mean the Mayans were good at math you guys are fucking terrific you can bloody multiply and hell you can also divide. i don't think I've used either of them since I bloody left school.
they disappeared off the face of the earth with basic math? shit quit school kids you don't need no education!