I need help with number four please and thank you for your help today.

1. Given:
[tex]1\div\frac{1}{2}[/tex]On simplification we get
[tex]1\times\frac{2}{1}=2[/tex]Hence the answer is 2.
2. Given:
[tex]\frac{1}{5}\div3[/tex]On simplification we get,
[tex]\frac{1}{5}\times\frac{1}{3}=\frac{1}{15}[/tex]Hence, the answer is
[tex]\frac{1}{15}[/tex]