Use the sliders to define the mixed numbers you want to multiply. As you are adjusting the sliders the calculator will convert the mixed number into an improper fraction. Press the calculate button to multiply the improper fractions together. Sorry but will have to simplify with your own brain. ******************** TO SET THE SLIDERS TO A VALUE LESS THAN 50 YOU MUST SLIDE THEM TO THE LEFT FIRST. ******************** **The fraction must be a mixed number or it will not work!**