Find closest multiple of $800$ to $1100$. We see that $1 \times 800 = 800$ is the nearest. Now subtract $800$ from $1100$ to get reminder $300$. Add $1$ to quotient.
Find closest multiple of $800$ to $3000$. We see that $3 \times 800 = 2400$ is the nearest. Now subtract $2400$ from $3000$ to get reminder $600$. Add $3$ to quotient.
Since $600$ is less than $800$, stop the division. The reminder is $600$. The topmost line $00013$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $13$.
