When dividing two fractions, the multiplicative reciprocal is an equivalent operation to division. So, we simply keep the first fraction, change the multiplication sign to division, and “flip” (reciprocate) the second fraction:
1/7 • 5/1
Remember, the expression now involves multiplication of two fractions, so the rule is to simply multiply the numerators straight across:
1/7•5=5/7
So, your answer is 5/7