Sorry I know what you mean, it is
144 32/1000
You just wrote it in fraction form
You are literally on a calculator website just type 3/4 in the calculator
So you start with
2/3=3r
and want to get R by itself, so you divide both sides by three
(2/3)/3 = (3r)/3
and that gets you .22222222222222
That is what division is, the top number on a fraction divided by the bottom number. just solve it like normal the convert to fraction. Like 1.5 you would just make 1 1/2
Go to Mathpapa.com for help with problems like this! Helped me out a lot back in algebra, and still in geometry