In a mid$-$size company, the number of phone calls answered each day by the receptionist is normally distributed with a mean of $53$ and a standard deviation of $7.$

Use the empirical rule $($not a computer or calculator$)$ to answer the following.

$($a$)$ What is the approximate percentage of days that phone calls number between $32$ and $74?\%$

$($b$)$ What is the approximate percentage of days that phone calls number between $46$ and $60?\%$

$($c$)$ What is the approximate percentage of days that phone calls number between $39$ and $67?\%$