We're dividing 20231998 by 855 
The aim is to understand the frequency of 855 in 20231998.

Step 1:
The number 855 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 855

Let's proceed to step 2:
855 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Fetch the next digit (2) from the dividend, attach it to 20 and continue: 202 / 855

Let's proceed to step 3:
202 divided by 855 is 0 with a remainder of 202.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 202 leaves us with 202.
Append the next digit (3) from the dividend to 202 and continue with: 2023 / 855

Going ahead to step 4:
855 can be fit into 2023 2 times, resulting in a remainder of 313.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 1710 from 2023 and we're left with 313.
Bring next digit (1) of the dividend behind the 313 and repeat the process: 3131 / 855

Moving on to step 5:
If we divide 3131 by 855, we get 3 and a remainder of 566.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we subtract 2565 from 3131, we get 566.
Append the next digit (9) from the dividend to 566 and continue with: 5669 / 855

Let's proceed to step 6:
855 goes into 5669 6 times with a remainder of 539.
Write down 6 as next digit of the result. 
Result so far: 236.0
Deduct 5130 from 5669 and we're left with 539.
Grab the next digit (9) from the dividend, add it to 539, then carry on: 5399 / 855

Step 7:
The number 855 fits into 5399 6 times, leaving a remainder of 269.
Record the quotient 6 as the next digit in the result. 
Result so far: 2366.0
Deduct 5130 from 5399 and we're left with 269.
Fetch the next digit (8) from the dividend, attach it to 269 and continue: 2698 / 855

Going ahead to step 8:
855 can be fit into 2698 3 times, resulting in a remainder of 133.
Put 3 as the next digit of the answer. 
Result so far: 23663.0
Deduct 2565 from 2698 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

On to step 9:
If we divide 1330 by 855, we get 1 and a remainder of 475.
Use 1 as the next digit of our solution. 
Result so far: 23663.1
If we subtract 855 from 1330, we get 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Going ahead to step 10:
855 can be fit into 4750 5 times, resulting in a remainder of 475.
Write down 5 as next digit of the result. 
Result so far: 23663.15
If we take 4275 away from 4750, we end up with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Going ahead to step 11:
855 can be fit into 4750 5 times, resulting in a remainder of 475.
Use 5 as the next digit of our solution. 
Result so far: 23663.155
Subtract 4275 from 4750 to get 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

The final result is 23663.155 with a remainder of 0.0475.