A unit fraction is a fraction with the numerator equals 1.
So, in order to have the fraction 4/5, we can multiply the number in the numerator by a unit fraction with the same denominator:
![(4)/(5)=4\cdot(1)/(5)](https://img.qammunity.org/2023/formulas/mathematics/high-school/qqjwlrwh9jo073elkvf5v67xl6pyebj0d4.png)
So the first blank space is filled with 4 and the second one with 1/5.