Find closest multiple of $10000$ to $21376$. We see that $2 \times 10000 = 20000$ is the nearest. Now subtract $20000$ from $21376$ to get reminder $1376$. Add $2$ to quotient.
Since $1376$ is less than $10000$, stop the division. The reminder is $1376$. The topmost line $00002$ is the quotient. Remove all zeros at the start of the quotient to get the actual quotient $2$.