Let's divide 21093799 by 981
We want to figure out the number of times 21093799 can be divided by 981.

On to step 1:
When dividing 2 by 981, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 981

Advancing to step 2:
When dividing 21 by 981, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 981

Step 3:
When dividing 210 by 981, we get 0 with a remainder of 210.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 210 after subtracting 0 from 210.
Take the next digit (9) from the dividend and append it to 210, then repeat: 2109 / 981

Going ahead to step 4:
If we divide 2109 by 981, we get 2 and a remainder of 147.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1962 from 2109 to get 147.
Append the next digit (3) from the dividend to 147 and continue with: 1473 / 981

On to step 5:
The number 981 fits into 1473 1 times, leaving a remainder of 492.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 981 from 1473 to get 492.
Bring next digit (7) of the dividend behind the 492 and repeat the process: 4927 / 981

On to step 6:
4927 divided by 981 is 5 with a remainder of 22.
Use 5 as the next digit of our solution. 
Result so far: 215.0
The remainder is 22 after subtracting 4905 from 4927.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 981

On to step 7:
981 goes into 229 0 times with a remainder of 229.
The number 0 becomes the next digit in our result. 
Result so far: 2150.0
Subtract 0 from 229 to get 229.
Include the next digit (9) from the dividend after 229, then repeat: 2299 / 981

Going ahead to step 8:
If we divide 2299 by 981, we get 2 and a remainder of 337.
Put 2 as the next digit of the answer. 
Result so far: 21502.0
If we subtract 1962 from 2299, we get 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Step 9:
The number 981 fits into 3370 3 times, leaving a remainder of 427.
Write down 3 as next digit of the result. 
Result so far: 21502.3
Deduct 2943 from 3370 and we're left with 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

On to step 10:
If we divide 4270 by 981, we get 4 and a remainder of 346.
The next digit of our result is 4. 
Result so far: 21502.34
Deduct 3924 from 4270 and we're left with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Going ahead to step 11:
981 can be fit into 3460 3 times, resulting in a remainder of 517.
Use 3 as the next digit of our solution. 
Result so far: 21502.343
If we subtract 2943 from 3460, we get 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Let's proceed to step 12:
5170 divided by 981 is 5 with a remainder of 265.
Write down 5 as next digit of the result. 
Result so far: 21502.3435
Subtract 4905 from 5170 to get 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Going ahead to step 13:
2650 divided by 981 is 2 with a remainder of 688.
Use 2 as the next digit of our solution. 
Result so far: 21502.34352
If we subtract 1962 from 2650, we get 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

On to step 14:
When dividing 6880 by 981, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 21502.343527
If we subtract 6867 from 6880, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 15:
981 can be fit into 130 0 times, resulting in a remainder of 130.
The next digit of our result is 0. 
Result so far: 21502.343527
If we subtract 0 from 130, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Advancing to step 16:
1300 divided by 981 is 1 with a remainder of 319.
Record the quotient 1 as the next digit in the result. 
Result so far: 21502.34352701
If we subtract 981 from 1300, we get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

The final result is 21502.34352701 with a remainder of 3.19e-07.