21591806 divided by 806 
We're looking to find how many times 806 goes into 21591806.

On to step 1:
806 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 806

Step 2:
806 can be fit into 21 0 times, resulting in a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 806

Step 3:
If we divide 215 by 806, we get 0 and a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 215 after subtracting 0 from 215.
Fetch the next digit (9) from the dividend, attach it to 215 and continue: 2159 / 806

On to step 4:
The number 806 fits into 2159 2 times, leaving a remainder of 547.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 547 after subtracting 1612 from 2159.
Append the next digit (1) from the dividend to 547 and continue with: 5471 / 806

Step 5:
If we divide 5471 by 806, we get 6 and a remainder of 635.
Write down 6 as next digit of the result. 
Result so far: 26.0
Subtracting 4836 from 5471 leaves us with 635.
Bring next digit (8) of the dividend behind the 635 and repeat the process: 6358 / 806

Step 6:
If we divide 6358 by 806, we get 7 and a remainder of 716.
Use 7 as the next digit of our solution. 
Result so far: 267.0
Subtract 5642 from 6358 to get 716.
Append the next digit (0) from the dividend to 716 and continue with: 7160 / 806

Advancing to step 7:
806 goes into 7160 8 times with a remainder of 712.
The next digit of our result is 8. 
Result so far: 2678.0
Subtract 6448 from 7160 to get 712.
Include the next digit (6) from the dividend after 712, then repeat: 7126 / 806

Going ahead to step 8:
The number 806 fits into 7126 8 times, leaving a remainder of 678.
The number 8 becomes the next digit in our result. 
Result so far: 26788.0
Subtracting 6448 from 7126 leaves us with 678.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6780, and continue the process.

On to step 9:
When dividing 6780 by 806, we get 8 with a remainder of 332.
Put 8 as the next digit of the answer. 
Result so far: 26788.8
The remainder is 332 after subtracting 6448 from 6780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

On to step 10:
806 can be fit into 3320 4 times, resulting in a remainder of 96.
The next digit of our result is 4. 
Result so far: 26788.84
If we take 3224 away from 3320, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 11:
806 goes into 960 1 times with a remainder of 154.
Record the quotient 1 as the next digit in the result. 
Result so far: 26788.841
The remainder is 154 after subtracting 806 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 12:
The number 806 fits into 1540 1 times, leaving a remainder of 734.
Write down 1 as next digit of the result. 
Result so far: 26788.8411
Deduct 806 from 1540 and we're left with 734.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7340, and continue the process.

In conclusion, the division gives 26788.8411 with a balance of 0.00734.