320621 ÷ 86 
The aim is to understand the frequency of 86 in 320621.

Going ahead to step 1:
86 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 86

Let's proceed to step 2:
32 divided by 86 is 0 with a remainder of 32.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 32 to get 32.
Fetch the next digit (0) from the dividend, attach it to 32 and continue: 320 / 86

Let's proceed to step 3:
320 divided by 86 is 3 with a remainder of 62.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 258 from 320 and we're left with 62.
Grab the next digit (6) from the dividend, add it to 62, then carry on: 626 / 86

Step 4:
If we divide 626 by 86, we get 7 and a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 602 from 626 to get 24.
Include the next digit (2) from the dividend after 24, then repeat: 242 / 86

Step 5:
The number 86 fits into 242 2 times, leaving a remainder of 70.
Write down 2 as next digit of the result. 
Result so far: 372.0
Subtracting 172 from 242 leaves us with 70.
Include the next digit (1) from the dividend after 70, then repeat: 701 / 86

On to step 6:
86 can be fit into 701 8 times, resulting in a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 3728.0
If we take 688 away from 701, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
If we divide 130 by 86, we get 1 and a remainder of 44.
Put 1 as the next digit of the answer. 
Result so far: 3728.1
If we subtract 86 from 130, we 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 8:
440 divided by 86 is 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 3728.15
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.

Step 9:
When dividing 100 by 86, we get 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 3728.151
The remainder is 14 after subtracting 86 from 100.
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 10:
If we divide 140 by 86, we get 1 and a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 3728.1511
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 3728.1511, with a leftover of 0.00054.