We look at the division of 87232989 by 855 
The aim is to understand the frequency of 855 in 87232989.

On to step 1:
The number 855 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 855

On to step 2:
The number 855 fits into 87 0 times, leaving a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Grab the next digit (2) from the dividend, add it to 87, then carry on: 872 / 855

Moving on to step 3:
855 can be fit into 872 1 times, resulting in a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 855 from 872 leaves us with 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 855

On to step 4:
The number 855 fits into 173 0 times, leaving a remainder of 173.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 173, we get 173.
Include the next digit (2) from the dividend after 173, then repeat: 1732 / 855

On to step 5:
855 goes into 1732 2 times with a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 102.0
The remainder is 22 after subtracting 1710 from 1732.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 855

Step 6:
229 divided by 855 is 0 with a remainder of 229.
Write down 0 as next digit of the result. 
Result so far: 1020.0
Subtracting 0 from 229 leaves us with 229.
Grab the next digit (8) from the dividend, add it to 229, then carry on: 2298 / 855

Advancing to step 7:
The number 855 fits into 2298 2 times, leaving a remainder of 588.
Record the quotient 2 as the next digit in the result. 
Result so far: 10202.0
Subtracting 1710 from 2298 leaves us with 588.
Grab the next digit (9) from the dividend, add it to 588, then carry on: 5889 / 855

Let's proceed to step 8:
If we divide 5889 by 855, we get 6 and a remainder of 759.
Record the quotient 6 as the next digit in the result. 
Result so far: 102026.0
Deduct 5130 from 5889 and we're left with 759.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7590, and continue the process.

Advancing to step 9:
855 can be fit into 7590 8 times, resulting in a remainder of 750.
Record the quotient 8 as the next digit in the result. 
Result so far: 102026.8
Subtract 6840 from 7590 to get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Going ahead to step 10:
The number 855 fits into 7500 8 times, leaving a remainder of 660.
Use 8 as the next digit of our solution. 
Result so far: 102026.88
Deduct 6840 from 7500 and we're left with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

In conclusion, the division gives 102026.88 with a balance of 0.66.