We're dividing 791427 by 21 
We want to figure out the number of times 791427 can be divided by 21.

Moving on to step 1:
If we divide 7 by 21, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 21

Let's proceed to step 2:
When dividing 79 by 21, we get 3 with a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 63 from 79 to get 16.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 21

On to 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
Subtract 147 from 161 to get 14.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 21

Step 4:
21 can be fit into 144 6 times, resulting in a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 376.0
Subtracting 126 from 144 leaves us with 18.
Append the next digit (2) from the dividend to 18 and continue with: 182 / 21

Step 5:
The number 21 fits into 182 8 times, leaving a remainder of 14.
Write down 8 as next digit of the result. 
Result so far: 3768.0
Subtract 168 from 182 to get 14.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 21

Step 6:
147 divided by 21 is 7 with a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 37687.0
Deduct 147 from 147 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 37687.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
If we divide 0 by 21, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 37687.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 37687.0, and the remainder is 0.0.