You can press this button to clear the numbers.
Put a whole number in each of these 4 boxes.
Make sure none of them are zero!
Otherwise, you won't be doing anything!

Next, press the Question button.

Next, we need your answer.
If your fraction is negative, make the numerator the negative number.
Put the numerator in the box on the left and the denominator in the box on the right.
Don't forget to reduce your answer!