If all tasks are expressed in numbers, it will look like this.
(3 + 5 + 7) + (3 + 5 + 7) + (3 + 5 + 7) = 45
7 + 7 + 7 = 21
3+ (3 + 3) + 3 = 12
3 + 5x (7 + 7) = 73
Pay attention to what the witch holds and where. There are double sticks and brooms too.