55368311 divided by 815 
The aim is to understand the frequency of 815 in 55368311.

Moving on to step 1:
815 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 815

On to step 2:
815 goes into 55 0 times with a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 55 to get 55.
Grab the next digit (3) from the dividend, add it to 55, then carry on: 553 / 815

Going ahead to step 3:
815 goes into 553 0 times with a remainder of 553.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 553, we get 553.
Append the next digit (6) from the dividend to 553 and continue with: 5536 / 815

On to step 4:
When dividing 5536 by 815, we get 6 with a remainder of 646.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 646 after subtracting 4890 from 5536.
Take the next digit (8) from the dividend and append it to 646, then repeat: 6468 / 815

On to step 5:
815 goes into 6468 7 times with a remainder of 763.
Put 7 as the next digit of the answer. 
Result so far: 67.0
If we subtract 5705 from 6468, we get 763.
Fetch the next digit (3) from the dividend, attach it to 763 and continue: 7633 / 815

On to step 6:
The number 815 fits into 7633 9 times, leaving a remainder of 298.
Write down 9 as next digit of the result. 
Result so far: 679.0
Deduct 7335 from 7633 and we're left with 298.
Bring next digit (1) of the dividend behind the 298 and repeat the process: 2981 / 815

Going ahead to step 7:
If we divide 2981 by 815, we get 3 and a remainder of 536.
Write down 3 as next digit of the result. 
Result so far: 6793.0
Subtracting 2445 from 2981 leaves us with 536.
Include the next digit (1) from the dividend after 536, then repeat: 5361 / 815

Moving on to step 8:
815 goes into 5361 6 times with a remainder of 471.
The next digit of our result is 6. 
Result so far: 67936.0
If we subtract 4890 from 5361, we get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Let's proceed to step 9:
4710 divided by 815 is 5 with a remainder of 635.
The next digit of our result is 5. 
Result so far: 67936.5
The remainder is 635 after subtracting 4075 from 4710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Let's proceed to step 10:
When dividing 6350 by 815, we get 7 with a remainder of 645.
Put 7 as the next digit of the answer. 
Result so far: 67936.57
The remainder is 645 after subtracting 5705 from 6350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6450, and continue the process.

Let's proceed to step 11:
815 goes into 6450 7 times with a remainder of 745.
Put 7 as the next digit of the answer. 
Result so far: 67936.577
Subtracting 5705 from 6450 leaves us with 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Our division results in 67936.577 with a remaining 0.0745.