(18-5) /(-37)+2*64 = 13/(-37) + 2*64    (the expression in parentheses is evaluated first) = -13/37 + 2*64    (division is leftmost, so it is evaluated next) = -13/37 + 128    (followed by the multiplication on the right) = 127 24/37    (last, the addition is performed)

Can treat as two separate operations.In the parentheses first. (18-5)/(- 37) = 13/ - 37 = -  0.351351 ======now, Multiplication first. 2 * 64 = 128 ======last task 128 + (- 0.135135 ) = ~ 127.86 ======( rounded off= 128, as -.135135 is minimal )

(18-5)/(-37)+2*64 = (13)/(-37)+2*64 = (13)/(-37)+128 = -0.3513+128 = 127.6487