65=91/?

What is the question mark

I would write the missing variable as x. It's what everyone uses.

Anyway, 91 divided by x is 65.

The way we can do this is reverse 65 and x.

91 divided by 65 = x.

91 divided by 1.4 = 65

65 x 1.4 = 91

x (or?) = 1.4