86795558 divided by 172 
The aim is to understand the frequency of 172 in 86795558.

On to step 1:
If we divide 8 by 172, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 172

Moving on to step 2:
86 divided by 172 is 0 with a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Take the next digit (7) from the dividend and append it to 86, then repeat: 867 / 172

Step 3:
867 divided by 172 is 5 with a remainder of 7.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 860 away from 867, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 172

Advancing to step 4:
When dividing 79 by 172, we get 0 with a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 50.0
If we take 0 away from 79, we end up with 79.
Include the next digit (5) from the dividend after 79, then repeat: 795 / 172

Advancing to step 5:
When dividing 795 by 172, we get 4 with a remainder of 107.
Record the quotient 4 as the next digit in the result. 
Result so far: 504.0
Subtracting 688 from 795 leaves us with 107.
Append the next digit (5) from the dividend to 107 and continue with: 1075 / 172

Going ahead to step 6:
The number 172 fits into 1075 6 times, leaving a remainder of 43.
Write down 6 as next digit of the result. 
Result so far: 5046.0
Subtract 1032 from 1075 to get 43.
Include the next digit (5) from the dividend after 43, then repeat: 435 / 172

Let's proceed to step 7:
435 divided by 172 is 2 with a remainder of 91.
The number 2 becomes the next digit in our result. 
Result so far: 50462.0
Subtracting 344 from 435 leaves us with 91.
Include the next digit (8) from the dividend after 91, then repeat: 918 / 172

On to step 8:
172 can be fit into 918 5 times, resulting in a remainder of 58.
Record the quotient 5 as the next digit in the result. 
Result so far: 504625.0
The remainder is 58 after subtracting 860 from 918.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 9:
If we divide 580 by 172, we get 3 and a remainder of 64.
The number 3 becomes the next digit in our result. 
Result so far: 504625.3
If we subtract 516 from 580, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 10:
172 goes into 640 3 times with a remainder of 124.
Use 3 as the next digit of our solution. 
Result so far: 504625.33
If we subtract 516 from 640, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

The final result is 504625.33 with a remainder of 0.124.