884398 ÷ 18 
The aim is to understand the frequency of 18 in 884398.

On to step 1:
When dividing 8 by 18, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 18

Step 2:
When dividing 88 by 18, we get 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 72 from 88, we get 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 18

On to step 3:
If we divide 164 by 18, we get 9 and a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
If we take 162 away from 164, we end up with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 18

Moving on to step 4:
When dividing 23 by 18, we get 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 491.0
Subtracting 18 from 23 leaves us with 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 18

Advancing to step 5:
The number 18 fits into 59 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 4913.0
If we take 54 away from 59, we end up with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 18

Going ahead to step 6:
58 divided by 18 is 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 49133.0
Deduct 54 from 58 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
The number 18 fits into 40 2 times, leaving a remainder of 4.
The next digit of our result is 2. 
Result so far: 49133.2
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
If we divide 40 by 18, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 49133.22
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 49133.22 with a remaining 0.004.