We look at the division of 12821237 by 912 
The aim is to understand the frequency of 912 in 12821237.

On to step 1:
912 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 912

Moving on to step 2:
If we divide 12 by 912, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 912

On to step 3:
128 divided by 912 is 0 with a remainder of 128.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 128, we end up with 128.
Grab the next digit (2) from the dividend, add it to 128, then carry on: 1282 / 912

Advancing to step 4:
1282 divided by 912 is 1 with a remainder of 370.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 912 from 1282 and we're left with 370.
Include the next digit (1) from the dividend after 370, then repeat: 3701 / 912

Let's proceed to step 5:
The number 912 fits into 3701 4 times, leaving a remainder of 53.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 3648 from 3701, we get 53.
Bring next digit (2) of the dividend behind the 53 and repeat the process: 532 / 912

On to step 6:
If we divide 532 by 912, we get 0 and a remainder of 532.
Write down 0 as next digit of the result. 
Result so far: 140.0
Deduct 0 from 532 and we're left with 532.
Grab the next digit (3) from the dividend, add it to 532, then carry on: 5323 / 912

Step 7:
912 goes into 5323 5 times with a remainder of 763.
The next digit of our result is 5. 
Result so far: 1405.0
The remainder is 763 after subtracting 4560 from 5323.
Append the next digit (7) from the dividend to 763 and continue with: 7637 / 912

Advancing to step 8:
The number 912 fits into 7637 8 times, leaving a remainder of 341.
Put 8 as the next digit of the answer. 
Result so far: 14058.0
The remainder is 341 after subtracting 7296 from 7637.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Going ahead to step 9:
912 goes into 3410 3 times with a remainder of 674.
Use 3 as the next digit of our solution. 
Result so far: 14058.3
Deduct 2736 from 3410 and we're left with 674.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6740, and continue the process.

Moving on to step 10:
The number 912 fits into 6740 7 times, leaving a remainder of 356.
Put 7 as the next digit of the answer. 
Result so far: 14058.37
Subtracting 6384 from 6740 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Step 11:
3560 divided by 912 is 3 with a remainder of 824.
Write down 3 as next digit of the result. 
Result so far: 14058.373
Subtract 2736 from 3560 to get 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Let's proceed to step 12:
When dividing 8240 by 912, we get 9 with a remainder of 32.
Use 9 as the next digit of our solution. 
Result so far: 14058.3739
Deduct 8208 from 8240 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
912 can be fit into 320 0 times, resulting in a remainder of 320.
Record the quotient 0 as the next digit in the result. 
Result so far: 14058.3739
Subtract 0 from 320 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 14:
912 can be fit into 3200 3 times, resulting in a remainder of 464.
The number 3 becomes the next digit in our result. 
Result so far: 14058.373903
The remainder is 464 after subtracting 2736 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Advancing to step 15:
912 can be fit into 4640 5 times, resulting in a remainder of 80.
The number 5 becomes the next digit in our result. 
Result so far: 14058.3739035
Deduct 4560 from 4640 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 16:
800 divided by 912 is 0 with a remainder of 800.
Record the quotient 0 as the next digit in the result. 
Result so far: 14058.3739035
Deduct 0 from 800 and we're left with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

After the division, we end up with 14058.3739035 and a remainder of 8e-07.