Find closest multiple of $24$ to $45$. We see that $1 \times 24 = 24$ is the nearest. Now subtract $24$ from $45$ to get reminder $21$. Add $1$ to quotient.
Find closest multiple of $24$ to $216$. We see that $9 \times 24 = 216$ is the nearest. Now subtract $216$ from $216$ to get reminder $0$. Add $9$ to quotient.
Since $0$ is less than $24$, stop the division. The reminder is $0$. The topmost line $019$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $19$.