We look at the division of 989199 by 21 
Our goal is to divide 989199 by 21.

Let's proceed to step 1:
9 divided by 21 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 21

Let's proceed to step 2:
When dividing 98 by 21, we get 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 84 away from 98, we end up with 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 21

Step 3:
When dividing 149 by 21, we get 7 with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 47.0
Subtract 147 from 149 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 21

Step 4:
21 divided by 21 is 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 471.0
Subtracting 21 from 21 leaves us with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 21

Step 5:
When dividing 9 by 21, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 4710.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 21

On to step 6:
When dividing 99 by 21, we get 4 with a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 47104.0
Subtracting 84 from 99 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 47104.7
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 8:
21 goes into 30 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 47104.71
If we take 21 away from 30, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
21 can be fit into 90 4 times, resulting in a remainder of 6.
The next digit of our result is 4. 
Result so far: 47104.714
If we take 84 away from 90, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
60 divided by 21 is 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 47104.7142
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 11:
21 goes into 180 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 47104.71428
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 12:
The number 21 fits into 120 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 47104.714285
Deduct 105 from 120 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 13:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 47104.7142857
Deduct 147 from 150 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
The number 21 fits into 30 1 times, leaving a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 47104.71428571
Deduct 21 from 30 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 47104.71428571 and a remainder of 9e-09.