We're dividing 23748172 by 818 
The aim is to understand the frequency of 818 in 23748172.

On to step 1:
818 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 818

Step 2:
818 can be fit into 23 0 times, resulting in a remainder of 23.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Append the next digit (7) from the dividend to 23 and continue with: 237 / 818

On to step 3:
If we divide 237 by 818, we get 0 and a remainder of 237.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 237, we get 237.
Include the next digit (4) from the dividend after 237, then repeat: 2374 / 818

Advancing to step 4:
2374 divided by 818 is 2 with a remainder of 738.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 1636 from 2374 and we're left with 738.
Bring next digit (8) of the dividend behind the 738 and repeat the process: 7388 / 818

Going ahead to step 5:
818 can be fit into 7388 9 times, resulting in a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtracting 7362 from 7388 leaves us with 26.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 818

Advancing to step 6:
When dividing 261 by 818, we get 0 with a remainder of 261.
Record the quotient 0 as the next digit in the result. 
Result so far: 290.0
If we subtract 0 from 261, we get 261.
Grab the next digit (7) from the dividend, add it to 261, then carry on: 2617 / 818

Going ahead to step 7:
2617 divided by 818 is 3 with a remainder of 163.
Record the quotient 3 as the next digit in the result. 
Result so far: 2903.0
Subtract 2454 from 2617 to get 163.
Take the next digit (2) from the dividend and append it to 163, then repeat: 1632 / 818

Going ahead to step 8:
If we divide 1632 by 818, we get 1 and a remainder of 814.
Put 1 as the next digit of the answer. 
Result so far: 29031.0
If we take 818 away from 1632, we end up with 814.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8140, and continue the process.

On to step 9:
If we divide 8140 by 818, we get 9 and a remainder of 778.
Put 9 as the next digit of the answer. 
Result so far: 29031.9
If we subtract 7362 from 8140, we get 778.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7780, and continue the process.

Let's proceed to step 10:
The number 818 fits into 7780 9 times, leaving a remainder of 418.
Put 9 as the next digit of the answer. 
Result so far: 29031.99
If we take 7362 away from 7780, we end up with 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Our division results in 29031.99 with a remaining 0.418.