Find closest multiple of $15$ to $25$. We see that $1 \times 15 = 15$ is the nearest. Now subtract $15$ from $25$ to get reminder $10$. Add $1$ to quotient.
Find closest multiple of $15$ to $105$. We see that $7 \times 15 = 105$ is the nearest. Now subtract $105$ from $105$ to get reminder $0$. Add $7$ to quotient.
Since $0$ is less than $15$, stop the division. The reminder is $0$. The topmost line $017$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $17$.
