We divide 791308 by 21
We want to figure out the number of times 791308 can be divided by 21.

On to step 1:
7 divided by 21 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 21

Let's proceed to step 2:
21 goes into 79 3 times with a remainder of 16.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 16 after subtracting 63 from 79.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 21

Advancing to step 3:
When dividing 161 by 21, we get 7 with a remainder of 14.
The next digit of our result is 7. 
Result so far: 37.0
If we subtract 147 from 161, we get 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 21

On to step 4:
If we divide 143 by 21, we get 6 and a remainder of 17.
The next digit of our result is 6. 
Result so far: 376.0
Deduct 126 from 143 and we're left with 17.
Fetch the next digit (0) from the dividend, attach it to 17 and continue: 170 / 21

Moving on to step 5:
170 divided by 21 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 3768.0
The remainder is 2 after subtracting 168 from 170.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 21

Moving on to step 6:
21 can be fit into 28 1 times, resulting in a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 37681.0
If we subtract 21 from 28, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
21 can be fit into 70 3 times, resulting in a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 37681.3
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 8:
21 goes into 70 3 times with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 37681.33
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 37681.33 with a balance of 0.007.