Find closest multiple of $33$ to $100$. We see that $3 \times 33 = 99$ is the nearest. Now subtract $99$ from $100$ to get reminder $1$. Add $3$ to quotient.
Since $1$ is less than $33$, stop the division. The reminder is $1$. The topmost line $003$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $3$.