Find closest multiple of $21$ to $134$. We see that $6 \times 21 = 126$ is the nearest. Now subtract $126$ from $134$ to get reminder $8$. Add $6$ to quotient.
Since $8$ is less than $21$, stop the division. The reminder is $8$. The topmost line $006$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $6$.