We're dividing 79118 by 21 
We want to figure out the number of times 79118 can be divided by 21.

Step 1:
The number 21 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 21

Step 2:
21 goes into 79 3 times with a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 63 away from 79, we end up with 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 21

Step 3:
161 divided by 21 is 7 with a remainder of 14.
Write down 7 as next digit of the result. 
Result so far: 37.0
Deduct 147 from 161 and we're left with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 21

Let's proceed to step 4:
If we divide 141 by 21, we get 6 and a remainder of 15.
The number 6 becomes the next digit in our result. 
Result so far: 376.0
Subtracting 126 from 141 leaves us with 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 21

Advancing to step 5:
If we divide 158 by 21, we get 7 and a remainder of 11.
Write down 7 as next digit of the result. 
Result so far: 3767.0
Subtract 147 from 158 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 6:
110 divided by 21 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 3767.5
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
21 goes into 50 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 3767.52
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
21 goes into 80 3 times with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 3767.523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
When dividing 170 by 21, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 3767.5238
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 3767.5238
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 3767.523809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 12:
21 can be fit into 110 5 times, resulting in a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 3767.5238095
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
If we divide 50 by 21, we get 2 and a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 3767.52380952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 3767.52380952, with a leftover of 8e-09.