We look at the division of 8628349 by 124 
The aim is to understand the frequency of 124 in 8628349.

Going ahead to step 1:
124 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 124

On to step 2:
86 divided by 124 is 0 with a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Append the next digit (2) from the dividend to 86 and continue with: 862 / 124

Going ahead to step 3:
When dividing 862 by 124, we get 6 with a remainder of 118.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 744 from 862, we get 118.
Fetch the next digit (8) from the dividend, attach it to 118 and continue: 1188 / 124

Let's proceed to step 4:
124 can be fit into 1188 9 times, resulting in a remainder of 72.
Put 9 as the next digit of the answer. 
Result so far: 69.0
Subtract 1116 from 1188 to get 72.
Append the next digit (3) from the dividend to 72 and continue with: 723 / 124

Let's proceed to step 5:
If we divide 723 by 124, we get 5 and a remainder of 103.
The next digit of our result is 5. 
Result so far: 695.0
Subtracting 620 from 723 leaves us with 103.
Grab the next digit (4) from the dividend, add it to 103, then carry on: 1034 / 124

Step 6:
124 can be fit into 1034 8 times, resulting in a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 6958.0
Subtracting 992 from 1034 leaves us with 42.
Include the next digit (9) from the dividend after 42, then repeat: 429 / 124

Moving on to step 7:
When dividing 429 by 124, we get 3 with a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 69583.0
If we subtract 372 from 429, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 8:
124 can be fit into 570 4 times, resulting in a remainder of 74.
Use 4 as the next digit of our solution. 
Result so far: 69583.4
If we take 496 away from 570, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 9:
When dividing 740 by 124, we get 5 with a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 69583.45
If we subtract 620 from 740, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 10:
The number 124 fits into 1200 9 times, leaving a remainder of 84.
Record the quotient 9 as the next digit in the result. 
Result so far: 69583.459
Subtracting 1116 from 1200 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 11:
If we divide 840 by 124, we get 6 and a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 69583.4596
Subtracting 744 from 840 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 12:
If we divide 960 by 124, we get 7 and a remainder of 92.
Put 7 as the next digit of the answer. 
Result so far: 69583.45967
If we subtract 868 from 960, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 13:
920 divided by 124 is 7 with a remainder of 52.
Write down 7 as next digit of the result. 
Result so far: 69583.459677
If we take 868 away from 920, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Our division results in 69583.459677 with a remaining 5.2e-06.