Find closest multiple of $28$ to $253$. We see that $9 \times 28 = 252$ is the nearest. Now subtract $252$ from $253$ to get reminder $1$. Add $9$ to quotient.
Find closest multiple of $28$ to $107$. We see that $3 \times 28 = 84$ is the nearest. Now subtract $84$ from $107$ to get reminder $23$. Add $3$ to quotient.
Since $23$ is less than $28$, stop the division. The reminder is $23$. The topmost line $00903$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $903$.