Let's divide 21915926 by 579
We're looking to find how many times 579 goes into 21915926.

Step 1:
2 divided by 579 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 579

Advancing to step 2:
When dividing 21 by 579, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 579

Step 3:
579 goes into 219 0 times with a remainder of 219.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 219, we get 219.
Grab the next digit (1) from the dividend, add it to 219, then carry on: 2191 / 579

Step 4:
2191 divided by 579 is 3 with a remainder of 454.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 1737 from 2191 to get 454.
Fetch the next digit (5) from the dividend, attach it to 454 and continue: 4545 / 579

On to step 5:
When dividing 4545 by 579, we get 7 with a remainder of 492.
Put 7 as the next digit of the answer. 
Result so far: 37.0
Subtracting 4053 from 4545 leaves us with 492.
Take the next digit (9) from the dividend and append it to 492, then repeat: 4929 / 579

Moving on to step 6:
The number 579 fits into 4929 8 times, leaving a remainder of 297.
The number 8 becomes the next digit in our result. 
Result so far: 378.0
If we subtract 4632 from 4929, we get 297.
Bring next digit (2) of the dividend behind the 297 and repeat the process: 2972 / 579

On to step 7:
579 can be fit into 2972 5 times, resulting in a remainder of 77.
Put 5 as the next digit of the answer. 
Result so far: 3785.0
The remainder is 77 after subtracting 2895 from 2972.
Include the next digit (6) from the dividend after 77, then repeat: 776 / 579

On to step 8:
The number 579 fits into 776 1 times, leaving a remainder of 197.
Use 1 as the next digit of our solution. 
Result so far: 37851.0
Deduct 579 from 776 and we're left with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Moving on to step 9:
579 goes into 1970 3 times with a remainder of 233.
Use 3 as the next digit of our solution. 
Result so far: 37851.3
Deduct 1737 from 1970 and we're left with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Going ahead to step 10:
If we divide 2330 by 579, we get 4 and a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 37851.34
Subtracting 2316 from 2330 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 11:
If we divide 140 by 579, we get 0 and a remainder of 140.
Record the quotient 0 as the next digit in the result. 
Result so far: 37851.34
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 12:
If we divide 1400 by 579, we get 2 and a remainder of 242.
The next digit of our result is 2. 
Result so far: 37851.3402
Subtracting 1158 from 1400 leaves us with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Let's proceed to step 13:
2420 divided by 579 is 4 with a remainder of 104.
The number 4 becomes the next digit in our result. 
Result so far: 37851.34024
Deduct 2316 from 2420 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Going ahead to step 14:
When dividing 1040 by 579, we get 1 with a remainder of 461.
Put 1 as the next digit of the answer. 
Result so far: 37851.340241
Deduct 579 from 1040 and we're left with 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Moving on to step 15:
4610 divided by 579 is 7 with a remainder of 557.
The next digit of our result is 7. 
Result so far: 37851.3402417
Deduct 4053 from 4610 and we're left with 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Let's proceed to step 16:
The number 579 fits into 5570 9 times, leaving a remainder of 359.
The next digit of our result is 9. 
Result so far: 37851.34024179
Deduct 5211 from 5570 and we're left with 359.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

The final result is 37851.34024179 with a remainder of 3.59e-07.