First, you would write 8.375 as a non simplified fraction. Since 8 is a whole number it will be by itself to the left of the fraction. Then, to the right of 8, you would put 375/1000. Place 1000 since the decimal in the original number is three places from the right. Then, simplify. 375/1000 can both be divided by 125(or 5, but that would take longer). 375 will go down to 3. 1000 will go down to 8. The your final product will be 8 3/8. I hope this helped!