We look at the division of 462400 by 18 
The aim is to understand the frequency of 18 in 462400.

Step 1:
The number 18 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 18

Let's proceed to step 2:
When dividing 46 by 18, we get 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 36 from 46 leaves us with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 18

Let's proceed to step 3:
If we divide 102 by 18, we get 5 and a remainder of 12.
The next digit of our result is 5. 
Result so far: 25.0
The remainder is 12 after subtracting 90 from 102.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 18

Advancing to step 4:
18 can be fit into 124 6 times, resulting in a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 256.0
Deduct 108 from 124 and we're left with 16.
Append the next digit (0) from the dividend to 16 and continue with: 160 / 18

Let's proceed to step 5:
18 can be fit into 160 8 times, resulting in a remainder of 16.
The next digit of our result is 8. 
Result so far: 2568.0
Deduct 144 from 160 and we're left with 16.
Include the next digit (0) from the dividend after 16, then repeat: 160 / 18

On to step 6:
18 can be fit into 160 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 25688.0
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
The number 18 fits into 160 8 times, leaving a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 25688.8
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 8:
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: 25688.88
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 25688.88, and the remainder is 0.016.