Find closest multiple of $100$ to $850$. We see that $8 \times 100 = 800$ is the nearest. Now subtract $800$ from $850$ to get reminder $50$. Add $8$ to quotient.
Since $50$ is less than $100$, stop the division. The reminder is $50$. The topmost line $008$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $8$.