A bakery sells three types of cookies: chocolate chip, oatmeal, and sugar. On a particular day, they sold a total of $80$ cookies. The number of oatmeal cookies sold was $m$. The number of sugar cookies sold was $12$ more than the number of oatmeal cookies. The number of chocolate chip cookies sold was twice the number of oatmeal cookies. Which equation must be true for the value of $m$?