We look at the division of 15117903 by 622 
The aim is to understand the frequency of 622 in 15117903.

On to step 1:
When dividing 1 by 622, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 622

Advancing to step 2:
The number 622 fits into 15 0 times, leaving a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 622

Moving on to step 3:
151 divided by 622 is 0 with a remainder of 151.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 151 and we're left with 151.
Include the next digit (1) from the dividend after 151, then repeat: 1511 / 622

On to step 4:
When dividing 1511 by 622, we get 2 with a remainder of 267.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 267 after subtracting 1244 from 1511.
Bring next digit (7) of the dividend behind the 267 and repeat the process: 2677 / 622

Moving on to step 5:
The number 622 fits into 2677 4 times, leaving a remainder of 189.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtract 2488 from 2677 to get 189.
Grab the next digit (9) from the dividend, add it to 189, then carry on: 1899 / 622

Moving on to step 6:
622 goes into 1899 3 times with a remainder of 33.
The next digit of our result is 3. 
Result so far: 243.0
Subtract 1866 from 1899 to get 33.
Fetch the next digit (0) from the dividend, attach it to 33 and continue: 330 / 622

Step 7:
330 divided by 622 is 0 with a remainder of 330.
Write down 0 as next digit of the result. 
Result so far: 2430.0
The remainder is 330 after subtracting 0 from 330.
Bring next digit (3) of the dividend behind the 330 and repeat the process: 3303 / 622

Going ahead to step 8:
If we divide 3303 by 622, we get 5 and a remainder of 193.
Record the quotient 5 as the next digit in the result. 
Result so far: 24305.0
If we subtract 3110 from 3303, we get 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Let's proceed to step 9:
622 can be fit into 1930 3 times, resulting in a remainder of 64.
Use 3 as the next digit of our solution. 
Result so far: 24305.3
If we subtract 1866 from 1930, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 10:
When dividing 640 by 622, we get 1 with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 24305.31
Subtract 622 from 640 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 11:
622 can be fit into 180 0 times, resulting in a remainder of 180.
Put 0 as the next digit of the answer. 
Result so far: 24305.31
If we subtract 0 from 180, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 12:
The number 622 fits into 1800 2 times, leaving a remainder of 556.
Use 2 as the next digit of our solution. 
Result so far: 24305.3102
Subtracting 1244 from 1800 leaves us with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Moving on to step 13:
The number 622 fits into 5560 8 times, leaving a remainder of 584.
Use 8 as the next digit of our solution. 
Result so far: 24305.31028
If we take 4976 away from 5560, we end up with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Step 14:
The number 622 fits into 5840 9 times, leaving a remainder of 242.
Record the quotient 9 as the next digit in the result. 
Result so far: 24305.310289
If we subtract 5598 from 5840, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

On to step 15:
2420 divided by 622 is 3 with a remainder of 554.
The next digit of our result is 3. 
Result so far: 24305.3102893
The remainder is 554 after subtracting 1866 from 2420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Moving on to step 16:
When dividing 5540 by 622, we get 8 with a remainder of 564.
Put 8 as the next digit of the answer. 
Result so far: 24305.31028938
If we take 4976 away from 5540, we end up with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

After the division, we end up with 24305.31028938 and a remainder of 5.64e-07.