5 can be written as 5/1, then:
[tex]\frac{7}{20}\cdot5=\frac{7}{20}\cdot\frac{5}{1}[/tex]
When multiplying fractions, numerators multiply each other and denominators multiply each other, that is:
[tex]\frac{7}{20}\cdot\frac{5}{1}=\frac{7\cdot5}{20\cdot1}=\frac{35}{20}[/tex]
This result can be simplified by dividing numerator and denominator by 5, as follows:
[tex]\frac{35}{20}=\frac{\frac{35}{5}}{\frac{20}{5}}=\frac{7}{4}[/tex]
7/4 is the final answer
