It depends on the divisor (denominator).
There are no decimal spaces here.
no spaces
2 Spaces
In typing, proper style is 2 spaces after a period (.), as well as after a colon (:).
It used to be 2 spaces but nowadays it is only 1.
one
"You have to count the spaces to the right to know how many spaces you have to put."
Three.
2
2
one space after and abberviation two spaces at the end of a sentence
One space follows a period after an initial.