Find closest multiple of $300$ to $1100$. We see that $3 \times 300 = 900$ is the nearest. Now subtract $900$ from $1100$ to get reminder $200$. Add $3$ to quotient.
Since $200$ is less than $300$, stop the division. The reminder is $200$. The topmost line $0003$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $3$.