We're dividing 17889788 by 855 
The aim is to understand the frequency of 855 in 17889788.

Let's proceed to step 1:
If we divide 1 by 855, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 855

Step 2:
855 goes into 17 0 times with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 855

Advancing to step 3:
If we divide 178 by 855, we get 0 and a remainder of 178.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 178 after subtracting 0 from 178.
Fetch the next digit (8) from the dividend, attach it to 178 and continue: 1788 / 855

On to step 4:
855 goes into 1788 2 times with a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 78 after subtracting 1710 from 1788.
Append the next digit (9) from the dividend to 78 and continue with: 789 / 855

Step 5:
If we divide 789 by 855, we get 0 and a remainder of 789.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 789 to get 789.
Include the next digit (7) from the dividend after 789, then repeat: 7897 / 855

Step 6:
If we divide 7897 by 855, we get 9 and a remainder of 202.
Record the quotient 9 as the next digit in the result. 
Result so far: 209.0
Subtract 7695 from 7897 to get 202.
Append the next digit (8) from the dividend to 202 and continue with: 2028 / 855

On to step 7:
855 can be fit into 2028 2 times, resulting in a remainder of 318.
The next digit of our result is 2. 
Result so far: 2092.0
Subtract 1710 from 2028 to get 318.
Include the next digit (8) from the dividend after 318, then repeat: 3188 / 855

On to step 8:
The number 855 fits into 3188 3 times, leaving a remainder of 623.
Record the quotient 3 as the next digit in the result. 
Result so far: 20923.0
If we take 2565 away from 3188, we end up with 623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

Moving on to step 9:
The number 855 fits into 6230 7 times, leaving a remainder of 245.
The number 7 becomes the next digit in our result. 
Result so far: 20923.7
Subtract 5985 from 6230 to get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Let's proceed to step 10:
If we divide 2450 by 855, we get 2 and a remainder of 740.
The next digit of our result is 2. 
Result so far: 20923.72
Subtract 1710 from 2450 to get 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Step 11:
When dividing 7400 by 855, we get 8 with a remainder of 560.
The number 8 becomes the next digit in our result. 
Result so far: 20923.728
Deduct 6840 from 7400 and we're left with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 12:
5600 divided by 855 is 6 with a remainder of 470.
The number 6 becomes the next digit in our result. 
Result so far: 20923.7286
If we take 5130 away from 5600, we end up with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Let's proceed to step 13:
4700 divided by 855 is 5 with a remainder of 425.
The next digit of our result is 5. 
Result so far: 20923.72865
Subtracting 4275 from 4700 leaves us with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Step 14:
When dividing 4250 by 855, we get 4 with a remainder of 830.
The next digit of our result is 4. 
Result so far: 20923.728654
If we take 3420 away from 4250, we end up with 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

On to step 15:
855 can be fit into 8300 9 times, resulting in a remainder of 605.
Use 9 as the next digit of our solution. 
Result so far: 20923.7286549
If we take 7695 away from 8300, we end up with 605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Going ahead to step 16:
When dividing 6050 by 855, we get 7 with a remainder of 65.
Use 7 as the next digit of our solution. 
Result so far: 20923.72865497
If we subtract 5985 from 6050, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

In conclusion, the division gives 20923.72865497 with a balance of 6.5e-08.