Let's divide 90270863 by 855
The aim is to understand the frequency of 855 in 90270863.

Step 1:
855 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 855

Step 2:
90 divided by 855 is 0 with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Fetch the next digit (2) from the dividend, attach it to 90 and continue: 902 / 855

On to step 3:
The number 855 fits into 902 1 times, leaving a remainder of 47.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 855 from 902 to get 47.
Fetch the next digit (7) from the dividend, attach it to 47 and continue: 477 / 855

Going ahead to step 4:
855 goes into 477 0 times with a remainder of 477.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 477, we end up with 477.
Include the next digit (0) from the dividend after 477, then repeat: 4770 / 855

Step 5:
The number 855 fits into 4770 5 times, leaving a remainder of 495.
Write down 5 as next digit of the result. 
Result so far: 105.0
If we take 4275 away from 4770, we end up with 495.
Fetch the next digit (8) from the dividend, attach it to 495 and continue: 4958 / 855

Step 6:
4958 divided by 855 is 5 with a remainder of 683.
The next digit of our result is 5. 
Result so far: 1055.0
If we subtract 4275 from 4958, we get 683.
Fetch the next digit (6) from the dividend, attach it to 683 and continue: 6836 / 855

Let's proceed to step 7:
If we divide 6836 by 855, we get 7 and a remainder of 851.
The number 7 becomes the next digit in our result. 
Result so far: 10557.0
If we subtract 5985 from 6836, we get 851.
Include the next digit (3) from the dividend after 851, then repeat: 8513 / 855

Advancing to step 8:
855 goes into 8513 9 times with a remainder of 818.
Record the quotient 9 as the next digit in the result. 
Result so far: 105579.0
Subtracting 7695 from 8513 leaves us with 818.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8180, and continue the process.

Going ahead to step 9:
855 can be fit into 8180 9 times, resulting in a remainder of 485.
Write down 9 as next digit of the result. 
Result so far: 105579.9
If we subtract 7695 from 8180, we get 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Moving on to step 10:
855 goes into 4850 5 times with a remainder of 575.
The next digit of our result is 5. 
Result so far: 105579.95
If we take 4275 away from 4850, we end up with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Moving on to step 11:
855 goes into 5750 6 times with a remainder of 620.
Use 6 as the next digit of our solution. 
Result so far: 105579.956
Subtract 5130 from 5750 to get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

On to step 12:
The number 855 fits into 6200 7 times, leaving a remainder of 215.
Put 7 as the next digit of the answer. 
Result so far: 105579.9567
If we take 5985 away from 6200, we end up with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 13:
When dividing 2150 by 855, we get 2 with a remainder of 440.
Record the quotient 2 as the next digit in the result. 
Result so far: 105579.95672
Deduct 1710 from 2150 and we're left with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Going ahead to step 14:
855 can be fit into 4400 5 times, resulting in a remainder of 125.
The number 5 becomes the next digit in our result. 
Result so far: 105579.956725
If we take 4275 away from 4400, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 15:
If we divide 1250 by 855, we get 1 and a remainder of 395.
The number 1 becomes the next digit in our result. 
Result so far: 105579.9567251
Deduct 855 from 1250 and we're left with 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Let's proceed to step 16:
When dividing 3950 by 855, we get 4 with a remainder of 530.
Record the quotient 4 as the next digit in the result. 
Result so far: 105579.95672514
If we take 3420 away from 3950, we end up with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

After the division, we end up with 105579.95672514 and a remainder of 5.3e-07.