This document contains various math problems and calculations including: multiplying 2 by 8 and 4 by 4 to get 16; dividing 64 by 3 to get 21.33 repeating; multiplying 7 by 8 and 6 by 18 to get 56 and then multiplying 56 by 6 and subtracting 54 to get 102; and multiplying 15 by 2 and 3 by 6 to get 90 and then subtracting 18 and 6 to get 66.