We look at the division of 12349184 by 126 
The aim is to understand the frequency of 126 in 12349184.

On to step 1:
The number 126 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 126

Advancing to step 2:
The number 126 fits into 12 0 times, leaving a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 126

Moving on to step 3:
The number 126 fits into 123 0 times, leaving a remainder of 123.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 123 to get 123.
Fetch the next digit (4) from the dividend, attach it to 123 and continue: 1234 / 126

Let's proceed to step 4:
126 goes into 1234 9 times with a remainder of 100.
The next digit of our result is 9. 
Result so far: 9.0
If we take 1134 away from 1234, we end up with 100.
Take the next digit (9) from the dividend and append it to 100, then repeat: 1009 / 126

On to step 5:
The number 126 fits into 1009 8 times, leaving a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
Subtracting 1008 from 1009 leaves us with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 126

Step 6:
If we divide 11 by 126, we get 0 and a remainder of 11.
The next digit of our result is 0. 
Result so far: 980.0
Deduct 0 from 11 and we're left with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 126

Moving on to step 7:
When dividing 118 by 126, we get 0 with a remainder of 118.
The number 0 becomes the next digit in our result. 
Result so far: 9800.0
Deduct 0 from 118 and we're left with 118.
Include the next digit (4) from the dividend after 118, then repeat: 1184 / 126

Let's proceed to step 8:
126 goes into 1184 9 times with a remainder of 50.
Use 9 as the next digit of our solution. 
Result so far: 98009.0
If we take 1134 away from 1184, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 9:
500 divided by 126 is 3 with a remainder of 122.
The next digit of our result is 3. 
Result so far: 98009.3
If we take 378 away from 500, we end up with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 10:
126 can be fit into 1220 9 times, resulting in a remainder of 86.
Record the quotient 9 as the next digit in the result. 
Result so far: 98009.39
Subtracting 1134 from 1220 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Let's proceed to step 11:
If we divide 860 by 126, we get 6 and a remainder of 104.
Write down 6 as next digit of the result. 
Result so far: 98009.396
If we subtract 756 from 860, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Step 12:
126 can be fit into 1040 8 times, resulting in a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 98009.3968
If we subtract 1008 from 1040, we get 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:
When dividing 320 by 126, we get 2 with a remainder of 68.
The number 2 becomes the next digit in our result. 
Result so far: 98009.39682
The remainder is 68 after subtracting 252 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 14:
When dividing 680 by 126, we get 5 with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 98009.396825
If we take 630 away from 680, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 15:
When dividing 500 by 126, we get 3 with a remainder of 122.
Use 3 as the next digit of our solution. 
Result so far: 98009.3968253
The remainder is 122 after subtracting 378 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 16:
126 can be fit into 1220 9 times, resulting in a remainder of 86.
The number 9 becomes the next digit in our result. 
Result so far: 98009.39682539
The remainder is 86 after subtracting 1134 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The final result is 98009.39682539 with a remainder of 8.6e-08.