We look at the division of 303292 by 86 
The aim is to understand the frequency of 86 in 303292.

Advancing to step 1:
When dividing 3 by 86, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 86

Step 2:
When dividing 30 by 86, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 86

Advancing to step 3:
If we divide 303 by 86, we get 3 and a remainder of 45.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 258 from 303, we get 45.
Append the next digit (2) from the dividend to 45 and continue with: 452 / 86

Step 4:
If we divide 452 by 86, we get 5 and a remainder of 22.
Use 5 as the next digit of our solution. 
Result so far: 35.0
Deduct 430 from 452 and we're left with 22.
Append the next digit (9) from the dividend to 22 and continue with: 229 / 86

Moving on to step 5:
86 goes into 229 2 times with a remainder of 57.
Use 2 as the next digit of our solution. 
Result so far: 352.0
If we subtract 172 from 229, we get 57.
Include the next digit (2) from the dividend after 57, then repeat: 572 / 86

Going ahead to step 6:
When dividing 572 by 86, we get 6 with a remainder of 56.
The next digit of our result is 6. 
Result so far: 3526.0
Deduct 516 from 572 and we're left 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.

Moving on to step 7:
86 can be fit into 560 6 times, resulting in a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 3526.6
The remainder is 44 after subtracting 516 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 8:
If we divide 440 by 86, we get 5 and a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 3526.65
If we subtract 430 from 440, we 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.

Moving on to step 9:
86 goes into 100 1 times with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 3526.651
Deduct 86 from 100 and we're left 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.

Moving on to step 10:
86 can be fit into 140 1 times, resulting in a remainder of 54.
The next digit of our result is 1. 
Result so far: 3526.6511
Subtract 86 from 140 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 3526.6511 with a remaining 0.00054.