We look at the division of 33501 by 86 
The aim is to understand the frequency of 86 in 33501.

Step 1:
86 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 86

Step 2:
33 divided by 86 is 0 with a remainder of 33.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Take the next digit (5) from the dividend and append it to 33, then repeat: 335 / 86

On to step 3:
The number 86 fits into 335 3 times, leaving a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 77 after subtracting 258 from 335.
Bring next digit (0) of the dividend behind the 77 and repeat the process: 770 / 86

Going ahead to step 4:
When dividing 770 by 86, we get 8 with a remainder of 82.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
If we take 688 away from 770, we end up with 82.
Fetch the next digit (1) from the dividend, attach it to 82 and continue: 821 / 86

Advancing to step 5:
821 divided by 86 is 9 with a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 389.0
If we take 774 away from 821, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 6:
The number 86 fits into 470 5 times, leaving a remainder of 40.
Write down 5 as next digit of the result. 
Result so far: 389.5
Deduct 430 from 470 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
400 divided by 86 is 4 with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 389.54
If we take 344 away from 400, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 8:
When dividing 560 by 86, we get 6 with a remainder of 44.
The next digit of our result is 6. 
Result so far: 389.546
If we take 516 away from 560, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 9:
86 goes into 440 5 times with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 389.5465
Subtract 430 from 440 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
100 divided by 86 is 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 389.54651
Subtracting 86 from 100 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 11:
When dividing 140 by 86, we get 1 with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 389.546511
Deduct 86 from 140 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 389.546511, with a leftover of 5.4e-06.