Find the reciprocals of the numbers below. The reciprocal of 20 is $\square$. The reciprocal of $\frac{1}{2}$ is $\square$.

Step 1 ：Find the reciprocals of the numbers below.

Step 2 ：The reciprocal of 20 is calculated as \( \frac{1}{20} \) which equals 0.05.

Step 3 ：The reciprocal of \( \frac{1}{2} \) is calculated as \( \frac{1}{\frac{1}{2}} \) which equals 2.

Step 4 ：Final Answer: The reciprocal of 20 is \( \boxed{0.05} \).

Step 5 ：The reciprocal of \( \frac{1}{2} \) is \( \boxed{2} \).