We're dividing 21720680 by 555 
We want to figure out the number of times 21720680 can be divided by 555.

Going ahead to step 1:
When dividing 2 by 555, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 555

On to step 2:
555 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (7) of the dividend behind the 21 and repeat the process: 217 / 555

Step 3:
555 goes into 217 0 times with a remainder of 217.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 217 and we're left with 217.
Grab the next digit (2) from the dividend, add it to 217, then carry on: 2172 / 555

Going ahead to step 4:
2172 divided by 555 is 3 with a remainder of 507.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 1665 from 2172 and we're left with 507.
Include the next digit (0) from the dividend after 507, then repeat: 5070 / 555

Moving on to step 5:
When dividing 5070 by 555, we get 9 with a remainder of 75.
Use 9 as the next digit of our solution. 
Result so far: 39.0
The remainder is 75 after subtracting 4995 from 5070.
Bring next digit (6) of the dividend behind the 75 and repeat the process: 756 / 555

On to step 6:
555 goes into 756 1 times with a remainder of 201.
Write down 1 as next digit of the result. 
Result so far: 391.0
If we take 555 away from 756, we end up with 201.
Include the next digit (8) from the dividend after 201, then repeat: 2018 / 555

Advancing to step 7:
2018 divided by 555 is 3 with a remainder of 353.
The number 3 becomes the next digit in our result. 
Result so far: 3913.0
Deduct 1665 from 2018 and we're left with 353.
Include the next digit (0) from the dividend after 353, then repeat: 3530 / 555

On to step 8:
555 goes into 3530 6 times with a remainder of 200.
The number 6 becomes the next digit in our result. 
Result so far: 39136.0
If we take 3330 away from 3530, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 9:
555 can be fit into 2000 3 times, resulting in a remainder of 335.
Put 3 as the next digit of the answer. 
Result so far: 39136.3
The remainder is 335 after subtracting 1665 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

On to step 10:
The number 555 fits into 3350 6 times, leaving a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 39136.36
If we subtract 3330 from 3350, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
555 can be fit into 200 0 times, resulting in a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 39136.36
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 12:
2000 divided by 555 is 3 with a remainder of 335.
The number 3 becomes the next digit in our result. 
Result so far: 39136.3603
If we subtract 1665 from 2000, we get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Let's proceed to step 13:
When dividing 3350 by 555, we get 6 with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 39136.36036
Subtracting 3330 from 3350 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 14:
When dividing 200 by 555, we get 0 with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 39136.36036
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 15:
555 can be fit into 2000 3 times, resulting in a remainder of 335.
Use 3 as the next digit of our solution. 
Result so far: 39136.3603603
If we subtract 1665 from 2000, we get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Moving on to step 16:
When dividing 3350 by 555, we get 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 39136.36036036
If we subtract 3330 from 3350, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 39136.36036036, with a leftover of 2e-08.