Let's divide 353964 by 86
The aim is to understand the frequency of 86 in 353964.

Moving on to step 1:
If we divide 3 by 86, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 86

Let's proceed to step 2:
35 divided by 86 is 0 with a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 86

Advancing to step 3:
86 can be fit into 353 4 times, resulting in a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 344 from 353 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 86

On to step 4:
When dividing 99 by 86, we get 1 with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 41.0
If we subtract 86 from 99, we get 13.
Bring next digit (6) of the dividend behind the 13 and repeat the process: 136 / 86

Going ahead to step 5:
The number 86 fits into 136 1 times, leaving a remainder of 50.
Write down 1 as next digit of the result. 
Result so far: 411.0
If we take 86 away from 136, we end up with 50.
Fetch the next digit (4) from the dividend, attach it to 50 and continue: 504 / 86

Going ahead to step 6:
When dividing 504 by 86, we get 5 with a remainder of 74.
Put 5 as the next digit of the answer. 
Result so far: 4115.0
The remainder is 74 after subtracting 430 from 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 7:
If we divide 740 by 86, we get 8 and a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 4115.8
Subtracting 688 from 740 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 8:
When dividing 520 by 86, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 4115.86
Subtract 516 from 520 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
If we divide 40 by 86, we get 0 and a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 4115.86
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
The number 86 fits into 400 4 times, leaving a remainder of 56.
The next digit of our result is 4. 
Result so far: 4115.8604
The remainder is 56 after subtracting 344 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 11:
86 can be fit into 560 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 4115.86046
Subtract 516 from 560 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 12:
86 goes into 440 5 times with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 4115.860465
If we take 430 away from 440, we end up with 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 13:
86 goes into 100 1 times with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 4115.8604651
Subtract 86 from 100 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 14:
The number 86 fits into 140 1 times, leaving a remainder of 54.
The next digit of our result is 1. 
Result so far: 4115.86046511
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.

The final outcome is 4115.86046511, with a leftover of 5.4e-08.