21069648 divided by 321 
We're looking to find how many times 321 goes into 21069648.

Moving on to step 1:
If we divide 2 by 321, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 321

On to step 2:
If we divide 21 by 321, we get 0 and a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 321

Going ahead to step 3:
321 goes into 210 0 times with a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 210 after subtracting 0 from 210.
Take the next digit (6) from the dividend and append it to 210, then repeat: 2106 / 321

Moving on to step 4:
321 goes into 2106 6 times with a remainder of 180.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 1926 from 2106, we get 180.
Fetch the next digit (9) from the dividend, attach it to 180 and continue: 1809 / 321

Advancing to step 5:
If we divide 1809 by 321, we get 5 and a remainder of 204.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Deduct 1605 from 1809 and we're left with 204.
Fetch the next digit (6) from the dividend, attach it to 204 and continue: 2046 / 321

On to step 6:
2046 divided by 321 is 6 with a remainder of 120.
Write down 6 as next digit of the result. 
Result so far: 656.0
If we take 1926 away from 2046, we end up with 120.
Append the next digit (4) from the dividend to 120 and continue with: 1204 / 321

Step 7:
321 goes into 1204 3 times with a remainder of 241.
Put 3 as the next digit of the answer. 
Result so far: 6563.0
If we subtract 963 from 1204, we get 241.
Append the next digit (8) from the dividend to 241 and continue with: 2418 / 321

Advancing to step 8:
If we divide 2418 by 321, we get 7 and a remainder of 171.
The next digit of our result is 7. 
Result so far: 65637.0
If we take 2247 away from 2418, we end up with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Moving on to step 9:
1710 divided by 321 is 5 with a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 65637.5
If we subtract 1605 from 1710, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 10:
321 can be fit into 1050 3 times, resulting in a remainder of 87.
Use 3 as the next digit of our solution. 
Result so far: 65637.53
Subtracting 963 from 1050 leaves us with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

On to step 11:
870 divided by 321 is 2 with a remainder of 228.
The next digit of our result is 2. 
Result so far: 65637.532
Subtracting 642 from 870 leaves us with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Moving on to step 12:
When dividing 2280 by 321, we get 7 with a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 65637.5327
Deduct 2247 from 2280 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 13:
321 can be fit into 330 1 times, resulting in a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 65637.53271
If we take 321 away from 330, we end up 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.

On to step 14:
When dividing 90 by 321, we get 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 65637.53271
If we subtract 0 from 90, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 15:
When dividing 900 by 321, we get 2 with a remainder of 258.
Record the quotient 2 as the next digit in the result. 
Result so far: 65637.5327102
If we take 642 away from 900, we end up with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

On to step 16:
If we divide 2580 by 321, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 65637.53271028
Deduct 2568 from 2580 and we're left 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.

The final outcome is 65637.53271028, with a leftover of 1.2e-08.