We look at the division of 307922 by 86 
The aim is to understand the frequency of 86 in 307922.

Going ahead to step 1:
If we divide 3 by 86, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 86

On to step 2:
The number 86 fits into 30 0 times, leaving a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Append the next digit (7) from the dividend to 30 and continue with: 307 / 86

Going ahead to step 3:
The number 86 fits into 307 3 times, leaving a remainder of 49.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 258 from 307 leaves us with 49.
Append the next digit (9) from the dividend to 49 and continue with: 499 / 86

On to step 4:
86 goes into 499 5 times with a remainder of 69.
The next digit of our result is 5. 
Result so far: 35.0
Subtract 430 from 499 to get 69.
Take the next digit (2) from the dividend and append it to 69, then repeat: 692 / 86

Moving on to step 5:
86 can be fit into 692 8 times, resulting in a remainder of 4.
The next digit of our result is 8. 
Result so far: 358.0
Subtract 688 from 692 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 86

Moving on to step 6:
The number 86 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 3580.0
If we take 0 away from 42, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 7:
86 can be fit into 420 4 times, resulting in a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 3580.4
If we take 344 away from 420, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 8:
If we divide 760 by 86, we get 8 and a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 3580.48
Subtract 688 from 760 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 9:
86 goes into 720 8 times with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 3580.488
The remainder is 32 after subtracting 688 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 3580.488 and a remainder of 0.0032.