Snapmap's arithmetic operations is an pain in the ass.
What you could do on calculator or with the programming code within 1 minute, you must waste hours to do same in Snapmap.
Looks like you can't multiply two variables in Snapmap, only two constants or one constant and one variable. Otherwise you'll get an infinite loop.
No problems here:
made a test map with 3 panels and 1 integer object
one panel adds 1 to the integer
one panel multiplies the integer by 2
one panel divides the integer by 4
And you can do operations on integers/floats with another integer/float, just change the constant in the operations properties to a variable by holding the options button + change (ctrl + x on PC)
My only other thought is if you are using an integer and dividing, is that the divide option is truncating any decimal, EG:
2 / 4 = 0.5, but an integer can't have a decimal so it's removed
in integer division 2 / 4 = 0
there is no rounding of numbers either, 3 / 4 = 0.75 and even though it is more than half, in int division 3 / 4 = 0
My suggestion would be to display your int in a world text or on the HUD as you test your map so see what is happening to it as you do the operations.