We look at the division of 8664172 by 757 
The aim is to understand the frequency of 757 in 8664172.

Advancing to step 1:
The number 757 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 757

On to step 2:
The number 757 fits into 86 0 times, leaving a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Append the next digit (6) from the dividend to 86 and continue with: 866 / 757

Step 3:
866 divided by 757 is 1 with a remainder of 109.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 757 from 866, we get 109.
Fetch the next digit (4) from the dividend, attach it to 109 and continue: 1094 / 757

On to step 4:
757 can be fit into 1094 1 times, resulting in a remainder of 337.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 757 from 1094, we get 337.
Include the next digit (1) from the dividend after 337, then repeat: 3371 / 757

Moving on to step 5:
When dividing 3371 by 757, we get 4 with a remainder of 343.
The number 4 becomes the next digit in our result. 
Result so far: 114.0
If we subtract 3028 from 3371, we get 343.
Append the next digit (7) from the dividend to 343 and continue with: 3437 / 757

Step 6:
When dividing 3437 by 757, we get 4 with a remainder of 409.
Write down 4 as next digit of the result. 
Result so far: 1144.0
Subtract 3028 from 3437 to get 409.
Grab the next digit (2) from the dividend, add it to 409, then carry on: 4092 / 757

Moving on to step 7:
The number 757 fits into 4092 5 times, leaving a remainder of 307.
Put 5 as the next digit of the answer. 
Result so far: 11445.0
Subtracting 3785 from 4092 leaves us with 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Moving on to step 8:
3070 divided by 757 is 4 with a remainder of 42.
Write down 4 as next digit of the result. 
Result so far: 11445.4
Subtract 3028 from 3070 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 9:
757 goes into 420 0 times with a remainder of 420.
Use 0 as the next digit of our solution. 
Result so far: 11445.4
If we subtract 0 from 420, we get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 10:
If we divide 4200 by 757, we get 5 and a remainder of 415.
The next digit of our result is 5. 
Result so far: 11445.405
Subtracting 3785 from 4200 leaves us with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

On to step 11:
The number 757 fits into 4150 5 times, leaving a remainder of 365.
Use 5 as the next digit of our solution. 
Result so far: 11445.4055
Subtracting 3785 from 4150 leaves us with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

After the division, we end up with 11445.4055 and a remainder of 0.00365.