We divide 912496 by 21
We want to figure out the number of times 912496 can be divided by 21.

Step 1:
If we divide 9 by 21, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 21

On to step 2:
When dividing 91 by 21, we get 4 with a remainder of 7.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 84 from 91 and we're left with 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 21

Going ahead to step 3:
If we divide 72 by 21, we get 3 and a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 43.0
The remainder is 9 after subtracting 63 from 72.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 21

Step 4:
21 goes into 94 4 times with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 434.0
Subtract 84 from 94 to get 10.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 21

Moving on to step 5:
109 divided by 21 is 5 with a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 4345.0
If we take 105 away from 109, we end up with 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 21

Moving on to step 6:
When dividing 46 by 21, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 43452.0
If we subtract 42 from 46, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
The number 21 fits into 40 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 43452.1
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 8:
21 can be fit into 190 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 43452.19
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
If we divide 10 by 21, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 43452.19
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
21 goes into 100 4 times with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 43452.1904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 43452.19047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 12:
When dividing 130 by 21, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 43452.190476
If we subtract 126 from 130, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
The number 21 fits into 40 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 43452.1904761
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 14:
If we divide 190 by 21, we get 9 and a remainder of 1.
The next digit of our result is 9. 
Result so far: 43452.19047619
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 43452.19047619 and a remainder of 1e-09.