We're dividing 79743 by 21 
We want to figure out the number of times 79743 can be divided by 21.

Moving on to step 1:
If we divide 7 by 21, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

Step 2:
21 goes into 79 3 times with a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 63 from 79, we get 16.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 21

Moving on to step 3:
21 goes into 167 7 times with a remainder of 20.
The next digit of our result is 7. 
Result so far: 37.0
Subtracting 147 from 167 leaves us with 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 21

Step 4:
21 can be fit into 204 9 times, resulting in a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 379.0
The remainder is 15 after subtracting 189 from 204.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 21

Step 5:
If we divide 153 by 21, we get 7 and a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 3797.0
Deduct 147 from 153 and we're left 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.

Let's proceed to step 6:
60 divided by 21 is 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 3797.2
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
21 can be fit into 180 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 3797.28
Subtract 168 from 180 to 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.

Going ahead to step 8:
If we divide 120 by 21, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 3797.285
If we take 105 away from 120, we end up 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 9:
When dividing 150 by 21, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 3797.2857
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.

Going ahead to step 10:
21 goes into 30 1 times with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 3797.28571
Subtracting 21 from 30 leaves us 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.

Going ahead to step 11:
The number 21 fits into 90 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 3797.285714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 12:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 3797.2857142
Subtract 42 from 60 to get 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 13:
21 goes into 180 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 3797.28571428
Subtracting 168 from 180 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

In conclusion, the division gives 3797.28571428 with a balance of 1.2e-08.