Find closest multiple of $25$ to $128$. We see that $5 \times 25 = 125$ is the nearest. Now subtract $125$ from $128$ to get reminder $3$. Add $5$ to quotient.
Find closest multiple of $25$ to $30$. We see that $1 \times 25 = 25$ is the nearest. Now subtract $25$ from $30$ to get reminder $5$. Add $1$ to quotient.
Since $5$ is less than $25$, stop the division. The reminder is $5$. The topmost line $0051$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $51$.
