We look at the division of 21499099 by 581 
Let's see how many times 581 fits into 21499099.

Let's proceed to step 1:
581 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 581

Step 2:
When dividing 21 by 581, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Append the next digit (4) from the dividend to 21 and continue with: 214 / 581

On to step 3:
When dividing 214 by 581, we get 0 with a remainder of 214.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 214 leaves us with 214.
Take the next digit (9) from the dividend and append it to 214, then repeat: 2149 / 581

Advancing to step 4:
When dividing 2149 by 581, we get 3 with a remainder of 406.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1743 away from 2149, we end up with 406.
Take the next digit (9) from the dividend and append it to 406, then repeat: 4069 / 581

On to step 5:
4069 divided by 581 is 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Deduct 4067 from 4069 and we're left with 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 581

On to step 6:
When dividing 20 by 581, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 370.0
Subtract 0 from 20 to get 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 581

Step 7:
When dividing 209 by 581, we get 0 with a remainder of 209.
Use 0 as the next digit of our solution. 
Result so far: 3700.0
Subtract 0 from 209 to get 209.
Include the next digit (9) from the dividend after 209, then repeat: 2099 / 581

Going ahead to step 8:
The number 581 fits into 2099 3 times, leaving a remainder of 356.
Use 3 as the next digit of our solution. 
Result so far: 37003.0
Subtracting 1743 from 2099 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 9:
If we divide 3560 by 581, we get 6 and a remainder of 74.
The next digit of our result is 6. 
Result so far: 37003.6
If we take 3486 away from 3560, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 10:
When dividing 740 by 581, we get 1 with a remainder of 159.
The number 1 becomes the next digit in our result. 
Result so far: 37003.61
The remainder is 159 after subtracting 581 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Step 11:
1590 divided by 581 is 2 with a remainder of 428.
Write down 2 as next digit of the result. 
Result so far: 37003.612
The remainder is 428 after subtracting 1162 from 1590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

On to step 12:
581 can be fit into 4280 7 times, resulting in a remainder of 213.
Write down 7 as next digit of the result. 
Result so far: 37003.6127
Subtract 4067 from 4280 to get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Going ahead to step 13:
2130 divided by 581 is 3 with a remainder of 387.
The next digit of our result is 3. 
Result so far: 37003.61273
The remainder is 387 after subtracting 1743 from 2130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Moving on to step 14:
3870 divided by 581 is 6 with a remainder of 384.
Put 6 as the next digit of the answer. 
Result so far: 37003.612736
The remainder is 384 after subtracting 3486 from 3870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Advancing to step 15:
When dividing 3840 by 581, we get 6 with a remainder of 354.
The next digit of our result is 6. 
Result so far: 37003.6127366
Subtract 3486 from 3840 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Our division results in 37003.6127366 with a remaining 3.54e-06.