We divide 662443 by 18
The aim is to understand the frequency of 18 in 662443.

Going ahead to step 1:
When dividing 6 by 18, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 18

Going ahead to step 2:
If we divide 66 by 18, we get 3 and a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 54 from 66, we get 12.
Take the next digit (2) from the dividend and append it to 12, then repeat: 122 / 18

Let's proceed to step 3:
If we divide 122 by 18, we get 6 and a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
Deduct 108 from 122 and we're left with 14.
Take the next digit (4) from the dividend and append it to 14, then repeat: 144 / 18

Let's proceed to step 4:
When dividing 144 by 18, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 368.0
Subtracting 144 from 144 leaves us with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 18

Moving on to step 5:
If we divide 4 by 18, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 3680.0
Subtract 0 from 4 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 18

Step 6:
The number 18 fits into 43 2 times, leaving a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 36802.0
The remainder is 7 after subtracting 36 from 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
The number 18 fits into 70 3 times, leaving a remainder of 16.
The next digit of our result is 3. 
Result so far: 36802.3
If we take 54 away from 70, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
If we divide 160 by 18, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 36802.38
If we take 144 away from 160, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
The number 18 fits into 160 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 36802.388
Subtracting 144 from 160 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 36802.388 with a remaining 0.0016.