We're dividing 170166 by 86 
The aim is to understand the frequency of 86 in 170166.

Going ahead to step 1:
86 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 86

On to step 2:
86 goes into 17 0 times with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 86

Step 3:
When dividing 170 by 86, we get 1 with a remainder of 84.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 86 from 170 to get 84.
Take the next digit (1) from the dividend and append it to 84, then repeat: 841 / 86

Advancing to step 4:
If we divide 841 by 86, we get 9 and a remainder of 67.
Write down 9 as next digit of the result. 
Result so far: 19.0
Subtracting 774 from 841 leaves us with 67.
Append the next digit (6) from the dividend to 67 and continue with: 676 / 86

Advancing to step 5:
When dividing 676 by 86, we get 7 with a remainder of 74.
Use 7 as the next digit of our solution. 
Result so far: 197.0
If we take 602 away from 676, we end up with 74.
Fetch the next digit (6) from the dividend, attach it to 74 and continue: 746 / 86

Going ahead to step 6:
86 can be fit into 746 8 times, resulting in a remainder of 58.
Use 8 as the next digit of our solution. 
Result so far: 1978.0
Deduct 688 from 746 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 7:
86 can be fit into 580 6 times, resulting in a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 1978.6
Deduct 516 from 580 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 8:
640 divided by 86 is 7 with a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 1978.67
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.

Advancing to step 9:
When dividing 380 by 86, we get 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 1978.674
Deduct 344 from 380 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
The number 86 fits into 360 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 1978.6744
Subtracting 344 from 360 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 1978.6744 with a balance of 0.00016.