We look at the division of 55223195 by 815 
The aim is to understand the frequency of 815 in 55223195.

Moving on to step 1:
If we divide 5 by 815, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 815

Step 2:
815 goes into 55 0 times with a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Fetch the next digit (2) from the dividend, attach it to 55 and continue: 552 / 815

Let's proceed to step 3:
When dividing 552 by 815, we get 0 with a remainder of 552.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 552, we get 552.
Include the next digit (2) from the dividend after 552, then repeat: 5522 / 815

Advancing to step 4:
5522 divided by 815 is 6 with a remainder of 632.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 4890 from 5522 leaves us with 632.
Include the next digit (3) from the dividend after 632, then repeat: 6323 / 815

Moving on to step 5:
815 can be fit into 6323 7 times, resulting in a remainder of 618.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
Subtracting 5705 from 6323 leaves us with 618.
Bring next digit (1) of the dividend behind the 618 and repeat the process: 6181 / 815

Advancing to step 6:
The number 815 fits into 6181 7 times, leaving a remainder of 476.
Put 7 as the next digit of the answer. 
Result so far: 677.0
The remainder is 476 after subtracting 5705 from 6181.
Append the next digit (9) from the dividend to 476 and continue with: 4769 / 815

On to step 7:
If we divide 4769 by 815, we get 5 and a remainder of 694.
The next digit of our result is 5. 
Result so far: 6775.0
The remainder is 694 after subtracting 4075 from 4769.
Fetch the next digit (5) from the dividend, attach it to 694 and continue: 6945 / 815

On to step 8:
815 goes into 6945 8 times with a remainder of 425.
The number 8 becomes the next digit in our result. 
Result so far: 67758.0
The remainder is 425 after subtracting 6520 from 6945.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Moving on to step 9:
815 goes into 4250 5 times with a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 67758.5
If we subtract 4075 from 4250, we get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

On to step 10:
815 goes into 1750 2 times with a remainder of 120.
Write down 2 as next digit of the result. 
Result so far: 67758.52
Deduct 1630 from 1750 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 11:
When dividing 1200 by 815, we get 1 with a remainder of 385.
Record the quotient 1 as the next digit in the result. 
Result so far: 67758.521
Subtracting 815 from 1200 leaves us with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 12:
The number 815 fits into 3850 4 times, leaving a remainder of 590.
The number 4 becomes the next digit in our result. 
Result so far: 67758.5214
If we take 3260 away from 3850, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Step 13:
815 can be fit into 5900 7 times, resulting in a remainder of 195.
Record the quotient 7 as the next digit in the result. 
Result so far: 67758.52147
If we subtract 5705 from 5900, we get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

On to step 14:
When dividing 1950 by 815, we get 2 with a remainder of 320.
Use 2 as the next digit of our solution. 
Result so far: 67758.521472
If we subtract 1630 from 1950, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
3200 divided by 815 is 3 with a remainder of 755.
Record the quotient 3 as the next digit in the result. 
Result so far: 67758.5214723
The remainder is 755 after subtracting 2445 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7550, and continue the process.

Going ahead to step 16:
7550 divided by 815 is 9 with a remainder of 215.
The next digit of our result is 9. 
Result so far: 67758.52147239
Deduct 7335 from 7550 and we're left 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.

The quotient of the division is 67758.52147239, and the remainder is 2.15e-07.