Find closest multiple of $852$ to $6240$. We see that $7 \times 852 = 5964$ is the nearest. Now subtract $5964$ from $6240$ to get reminder $276$. Add $7$ to quotient.
Find closest multiple of $852$ to $2766$. We see that $3 \times 852 = 2556$ is the nearest. Now subtract $2556$ from $2766$ to get reminder $210$. Add $3$ to quotient.
Since $210$ is less than $852$, stop the division. The reminder is $210$. The topmost line $00073$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $73$.