We're dividing 108979 by 21 
Our goal is to divide 108979 by 21.

Going ahead to step 1:
When dividing 1 by 21, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 21

Going ahead to step 2:
The number 21 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 21

Step 3:
21 can be fit into 108 5 times, resulting in a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 105 away from 108, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 21

Step 4:
When dividing 39 by 21, we get 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 51.0
Subtracting 21 from 39 leaves us with 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 21

Let's proceed to step 5:
The number 21 fits into 187 8 times, leaving a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 518.0
If we subtract 168 from 187, we get 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 21

Step 6:
21 can be fit into 199 9 times, resulting in a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 5189.0
If we take 189 away from 199, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
100 divided by 21 is 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 5189.4
If we take 84 away from 100, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
160 divided by 21 is 7 with a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 5189.47
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 9:
21 goes into 130 6 times with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 5189.476
If we subtract 126 from 130, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 5189.4761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 11:
21 goes into 190 9 times with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 5189.47619
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 12:
21 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 5189.47619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 5189.4761904
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 14:
21 can be fit into 160 7 times, resulting in a remainder of 13.
The next digit of our result is 7. 
Result so far: 5189.47619047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The quotient of the division is 5189.47619047, and the remainder is 1.3e-08.