We look at the division of 734538 by 21 
We want to figure out the number of times 734538 can be divided by 21.

Advancing to step 1:
21 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 21

Moving on to step 2:
21 can be fit into 73 3 times, resulting in a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 63 from 73 and we're left with 10.
Append the next digit (4) from the dividend to 10 and continue with: 104 / 21

Let's proceed to step 3:
21 goes into 104 4 times with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 34.0
If we take 84 away from 104, we end up with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 21

Going ahead to step 4:
The number 21 fits into 205 9 times, leaving a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 349.0
If we take 189 away from 205, we end up with 16.
Grab the next digit (3) from the dividend, add it to 16, then carry on: 163 / 21

Moving on to step 5:
21 goes into 163 7 times with a remainder of 16.
The next digit of our result is 7. 
Result so far: 3497.0
Subtract 147 from 163 to get 16.
Include the next digit (8) from the dividend after 16, then repeat: 168 / 21

Going ahead to step 6:
168 divided by 21 is 8 with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 34978.0
If we subtract 168 from 168, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
When dividing 0 by 21, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34978.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
When dividing 0 by 21, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34978.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 34978.0 with a remaining 0.0.