Let's divide 18011917 by 523
The aim is to understand the frequency of 523 in 18011917.

Going ahead to step 1:
When dividing 1 by 523, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 523

Moving on to step 2:
523 can be fit into 18 0 times, resulting in a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Grab the next digit (0) from the dividend, add it to 18, then carry on: 180 / 523

Advancing to step 3:
180 divided by 523 is 0 with a remainder of 180.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 180 leaves us with 180.
Bring next digit (1) of the dividend behind the 180 and repeat the process: 1801 / 523

Going ahead to step 4:
523 can be fit into 1801 3 times, resulting in a remainder of 232.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1569 away from 1801, we end up with 232.
Include the next digit (1) from the dividend after 232, then repeat: 2321 / 523

Step 5:
When dividing 2321 by 523, we get 4 with a remainder of 229.
Put 4 as the next digit of the answer. 
Result so far: 34.0
The remainder is 229 after subtracting 2092 from 2321.
Bring next digit (9) of the dividend behind the 229 and repeat the process: 2299 / 523

On to step 6:
If we divide 2299 by 523, we get 4 and a remainder of 207.
Write down 4 as next digit of the result. 
Result so far: 344.0
The remainder is 207 after subtracting 2092 from 2299.
Take the next digit (1) from the dividend and append it to 207, then repeat: 2071 / 523

Moving on to step 7:
523 goes into 2071 3 times with a remainder of 502.
Record the quotient 3 as the next digit in the result. 
Result so far: 3443.0
If we take 1569 away from 2071, we end up with 502.
Bring next digit (7) of the dividend behind the 502 and repeat the process: 5027 / 523

Step 8:
When dividing 5027 by 523, we get 9 with a remainder of 320.
The number 9 becomes the next digit in our result. 
Result so far: 34439.0
Subtracting 4707 from 5027 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 9:
3200 divided by 523 is 6 with a remainder of 62.
The next digit of our result is 6. 
Result so far: 34439.6
The remainder is 62 after subtracting 3138 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 10:
If we divide 620 by 523, we get 1 and a remainder of 97.
Put 1 as the next digit of the answer. 
Result so far: 34439.61
The remainder is 97 after subtracting 523 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

On to step 11:
If we divide 970 by 523, we get 1 and a remainder of 447.
Write down 1 as next digit of the result. 
Result so far: 34439.611
If we subtract 523 from 970, we get 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

The final result is 34439.611 with a remainder of 0.0447.