We look at the division of 532160 by 86 
The aim is to understand the frequency of 86 in 532160.

Advancing to step 1:
When dividing 5 by 86, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 86

On to step 2:
If we divide 53 by 86, we get 0 and a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Include the next digit (2) from the dividend after 53, then repeat: 532 / 86

Going ahead to step 3:
When dividing 532 by 86, we get 6 with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 516 from 532 leaves us with 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 86

Going ahead to step 4:
86 goes into 161 1 times with a remainder of 75.
Put 1 as the next digit of the answer. 
Result so far: 61.0
Subtracting 86 from 161 leaves us with 75.
Append the next digit (6) from the dividend to 75 and continue with: 756 / 86

On to step 5:
If we divide 756 by 86, we get 8 and a remainder of 68.
The next digit of our result is 8. 
Result so far: 618.0
If we subtract 688 from 756, we get 68.
Include the next digit (0) from the dividend after 68, then repeat: 680 / 86

Step 6:
86 goes into 680 7 times with a remainder of 78.
Use 7 as the next digit of our solution. 
Result so far: 6187.0
If we subtract 602 from 680, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 7:
If we divide 780 by 86, we get 9 and a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 6187.9
Deduct 774 from 780 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
If we divide 60 by 86, we get 0 and a remainder of 60.
The next digit of our result is 0. 
Result so far: 6187.9
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
600 divided by 86 is 6 with a remainder of 84.
Use 6 as the next digit of our solution. 
Result so far: 6187.906
Subtract 516 from 600 to get 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 10:
When dividing 840 by 86, we get 9 with a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 6187.9069
If we subtract 774 from 840, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 11:
If we divide 660 by 86, we get 7 and a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 6187.90697
Deduct 602 from 660 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 12:
86 can be fit into 580 6 times, resulting in a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 6187.906976
The remainder is 64 after subtracting 516 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 13:
640 divided by 86 is 7 with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 6187.9069767
If we take 602 away from 640, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 14:
The number 86 fits into 380 4 times, leaving a remainder of 36.
The next digit of our result is 4. 
Result so far: 6187.90697674
Subtract 344 from 380 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final result is 6187.90697674 with a remainder of 3.6e-08.