The division challenge can be written as 9 - 3 / 1 / 3 + 1.
The division is performed first, from left to right, so 3 / 1 / 3 = 1.
Now we have 9 - 1 + 1 = 9
The division challenge can be written as 9 - 3 / 1 / 3 + 1.
The division is performed first, from left to right, so 3 / 1 / 3 = 1.
Now we have 9 - 1 + 1 = 9