86209358 ÷ 356 
The aim is to understand the frequency of 356 in 86209358.

Going ahead to step 1:
The number 356 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 356

Let's proceed to step 2:
If we divide 86 by 356, we get 0 and a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Grab the next digit (2) from the dividend, add it to 86, then carry on: 862 / 356

On to step 3:
862 divided by 356 is 2 with a remainder of 150.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 712 from 862 to get 150.
Bring next digit (0) of the dividend behind the 150 and repeat the process: 1500 / 356

Moving on to step 4:
The number 356 fits into 1500 4 times, leaving a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Deduct 1424 from 1500 and we're left with 76.
Include the next digit (9) from the dividend after 76, then repeat: 769 / 356

Advancing to step 5:
356 goes into 769 2 times with a remainder of 57.
The next digit of our result is 2. 
Result so far: 242.0
If we subtract 712 from 769, we get 57.
Fetch the next digit (3) from the dividend, attach it to 57 and continue: 573 / 356

Step 6:
356 can be fit into 573 1 times, resulting in a remainder of 217.
The next digit of our result is 1. 
Result so far: 2421.0
Deduct 356 from 573 and we're left with 217.
Take the next digit (5) from the dividend and append it to 217, then repeat: 2175 / 356

Moving on to step 7:
356 can be fit into 2175 6 times, resulting in a remainder of 39.
The number 6 becomes the next digit in our result. 
Result so far: 24216.0
Subtracting 2136 from 2175 leaves us with 39.
Include the next digit (8) from the dividend after 39, then repeat: 398 / 356

Moving on to step 8:
398 divided by 356 is 1 with a remainder of 42.
The next digit of our result is 1. 
Result so far: 242161.0
Deduct 356 from 398 and we're left 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.

Step 9:
The number 356 fits into 420 1 times, leaving a remainder of 64.
Put 1 as the next digit of the answer. 
Result so far: 242161.1
Subtract 356 from 420 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
If we divide 640 by 356, we get 1 and a remainder of 284.
Put 1 as the next digit of the answer. 
Result so far: 242161.11
Subtract 356 from 640 to get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Our division results in 242161.11 with a remaining 0.284.