21072743 divided by 665 
Our goal is to divide 21072743 by 665.

On to step 1:
2 divided by 665 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 665

Advancing to step 2:
665 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 665

Advancing to step 3:
665 can be fit into 210 0 times, resulting in a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 210, we get 210.
Grab the next digit (7) from the dividend, add it to 210, then carry on: 2107 / 665

On to step 4:
665 goes into 2107 3 times with a remainder of 112.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 112 after subtracting 1995 from 2107.
Grab the next digit (2) from the dividend, add it to 112, then carry on: 1122 / 665

Advancing to step 5:
665 can be fit into 1122 1 times, resulting in a remainder of 457.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Deduct 665 from 1122 and we're left with 457.
Take the next digit (7) from the dividend and append it to 457, then repeat: 4577 / 665

Moving on to step 6:
665 goes into 4577 6 times with a remainder of 587.
Put 6 as the next digit of the answer. 
Result so far: 316.0
Subtract 3990 from 4577 to get 587.
Fetch the next digit (4) from the dividend, attach it to 587 and continue: 5874 / 665

On to step 7:
5874 divided by 665 is 8 with a remainder of 554.
Use 8 as the next digit of our solution. 
Result so far: 3168.0
If we take 5320 away from 5874, we end up with 554.
Include the next digit (3) from the dividend after 554, then repeat: 5543 / 665

Step 8:
If we divide 5543 by 665, we get 8 and a remainder of 223.
Use 8 as the next digit of our solution. 
Result so far: 31688.0
If we subtract 5320 from 5543, we get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Going ahead to step 9:
665 can be fit into 2230 3 times, resulting in a remainder of 235.
Use 3 as the next digit of our solution. 
Result so far: 31688.3
Subtracting 1995 from 2230 leaves us with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Advancing to step 10:
The number 665 fits into 2350 3 times, leaving a remainder of 355.
Write down 3 as next digit of the result. 
Result so far: 31688.33
Deduct 1995 from 2350 and we're left with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

In conclusion, the division gives 31688.33 with a balance of 0.355.