We look at the division of 218841 by 86 
The aim is to understand the frequency of 86 in 218841.

Going ahead to step 1:
2 divided by 86 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 86

Moving on to step 2:
86 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 86

Let's proceed to step 3:
86 can be fit into 218 2 times, resulting in a remainder of 46.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 172 from 218 and we're left with 46.
Bring next digit (8) of the dividend behind the 46 and repeat the process: 468 / 86

Let's proceed to step 4:
The number 86 fits into 468 5 times, leaving a remainder of 38.
Use 5 as the next digit of our solution. 
Result so far: 25.0
If we take 430 away from 468, we end up with 38.
Append the next digit (4) from the dividend to 38 and continue with: 384 / 86

Step 5:
86 goes into 384 4 times with a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 254.0
The remainder is 40 after subtracting 344 from 384.
Take the next digit (1) from the dividend and append it to 40, then repeat: 401 / 86

Moving on to step 6:
86 goes into 401 4 times with a remainder of 57.
Write down 4 as next digit of the result. 
Result so far: 2544.0
Subtracting 344 from 401 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 7:
570 divided by 86 is 6 with a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 2544.6
If we take 516 away from 570, we end up 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.

Advancing to step 8:
The number 86 fits into 540 6 times, leaving a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 2544.66
Subtract 516 from 540 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 2544.66, with a leftover of 0.024.