915747 divided by 21 
Our goal is to divide 915747 by 21.

Advancing to step 1:
21 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 21

On to step 2:
If we divide 91 by 21, we get 4 and a remainder of 7.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 84 from 91 and we're left with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 21

Going ahead to step 3:
If we divide 75 by 21, we get 3 and a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 43.0
If we take 63 away from 75, we end up with 12.
Bring next digit (7) of the dividend behind the 12 and repeat the process: 127 / 21

Step 4:
21 can be fit into 127 6 times, resulting in a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 436.0
If we take 126 away from 127, we end up with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 21

Advancing to step 5:
21 can be fit into 14 0 times, resulting in a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 4360.0
If we subtract 0 from 14, we get 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 21

Going ahead to step 6:
The number 21 fits into 147 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 43607.0
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.

Let's proceed to step 7:
The number 21 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 43607.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
21 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 43607.0
Deduct 0 from 0 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.

The final outcome is 43607.0, with a leftover of 0.0.