We look at the division of 334923 by 86 
The aim is to understand the frequency of 86 in 334923.

On to step 1:
If we divide 3 by 86, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 86

Moving on to step 2:
33 divided by 86 is 0 with a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 33, we end up with 33.
Append the next digit (4) from the dividend to 33 and continue with: 334 / 86

Step 3:
86 goes into 334 3 times with a remainder of 76.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 258 from 334 and we're left with 76.
Take the next digit (9) from the dividend and append it to 76, then repeat: 769 / 86

Advancing to step 4:
When dividing 769 by 86, we get 8 with a remainder of 81.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Subtracting 688 from 769 leaves us with 81.
Append the next digit (2) from the dividend to 81 and continue with: 812 / 86

Moving on to step 5:
86 goes into 812 9 times with a remainder of 38.
The next digit of our result is 9. 
Result so far: 389.0
Deduct 774 from 812 and we're left with 38.
Fetch the next digit (3) from the dividend, attach it to 38 and continue: 383 / 86

Step 6:
The number 86 fits into 383 4 times, leaving a remainder of 39.
Use 4 as the next digit of our solution. 
Result so far: 3894.0
Subtract 344 from 383 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 7:
The number 86 fits into 390 4 times, leaving a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 3894.4
Subtract 344 from 390 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 8:
When dividing 460 by 86, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 3894.45
The remainder is 30 after subtracting 430 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
86 goes into 300 3 times with a remainder of 42.
The next digit of our result is 3. 
Result so far: 3894.453
The remainder is 42 after subtracting 258 from 300.
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 10:
When dividing 420 by 86, we get 4 with a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 3894.4534
If we subtract 344 from 420, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 11:
The number 86 fits into 760 8 times, leaving a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 3894.45348
The remainder is 72 after subtracting 688 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 12:
If we divide 720 by 86, we get 8 and a remainder of 32.
The next digit of our result is 8. 
Result so far: 3894.453488
Deduct 688 from 720 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 3894.453488 with a balance of 3.2e-06.