We divide 327972 by 21
We want to figure out the number of times 327972 can be divided by 21.

Advancing to step 1:
If we divide 3 by 21, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 21

On to step 2:
21 goes into 32 1 times with a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 21 from 32 and we're left with 11.
Grab the next digit (7) from the dividend, add it to 11, then carry on: 117 / 21

On to step 3:
The number 21 fits into 117 5 times, leaving a remainder of 12.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we subtract 105 from 117, we get 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 21

Let's proceed to step 4:
21 can be fit into 129 6 times, resulting in a remainder of 3.
The next digit of our result is 6. 
Result so far: 156.0
Subtract 126 from 129 to get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 21

Going ahead to step 5:
37 divided by 21 is 1 with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 1561.0
Subtract 21 from 37 to get 16.
Bring next digit (2) of the dividend behind the 16 and repeat the process: 162 / 21

Moving on to step 6:
When dividing 162 by 21, we get 7 with a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 15617.0
Deduct 147 from 162 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
When dividing 150 by 21, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 15617.7
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
21 goes into 30 1 times with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 15617.71
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
21 can be fit into 90 4 times, resulting in a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 15617.714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 10:
When dividing 60 by 21, we get 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 15617.7142
Deduct 42 from 60 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 11:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 15617.71428
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 12:
The number 21 fits into 120 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 15617.714285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 13:
21 goes into 150 7 times with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 15617.7142857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
21 can be fit into 30 1 times, resulting in a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 15617.71428571
If we subtract 21 from 30, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 15617.71428571 and a remainder of 9e-09.