We're dividing 465993 by 18 
The aim is to understand the frequency of 18 in 465993.

Step 1:
18 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 18

Moving on to step 2:
When dividing 46 by 18, we get 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 36 from 46 to get 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 18

Step 3:
18 can be fit into 105 5 times, resulting in a remainder of 15.
The next digit of our result is 5. 
Result so far: 25.0
If we subtract 90 from 105, we get 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 18

Going ahead to step 4:
18 goes into 159 8 times with a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 258.0
If we take 144 away from 159, we end up with 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 18

Going ahead to step 5:
When dividing 159 by 18, we get 8 with a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 2588.0
Subtracting 144 from 159 leaves us with 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 18

Step 6:
The number 18 fits into 153 8 times, leaving a remainder of 9.
The next digit of our result is 8. 
Result so far: 25888.0
Deduct 144 from 153 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
18 can be fit into 90 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 25888.5
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
18 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25888.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25888.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 25888.5 with a remaining 0.0.