To divide a number by a fraction, you can multiply by the reciprocal of that fraction.
In this case, you want to divide 5 by one-fifth (1/5):
\[ 5 \div \frac{1}{5} = 5 \times 5 \]
This is because the reciprocal of \(\frac{1}{5}\) is \(5\).
So, calculating that:
\[ 5 \times 5 = 25 \]
Therefore, the result of 5 divided by one-fifth is 25.