426230 ÷ 18 
The aim is to understand the frequency of 18 in 426230.

Moving on to step 1:
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: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 18

Let's proceed to step 2:
When dividing 42 by 18, we get 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 36 away from 42, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 18

Advancing to step 3:
18 goes into 66 3 times with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
The remainder is 12 after subtracting 54 from 66.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 18

On to step 4:
18 can be fit into 122 6 times, resulting in a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 236.0
The remainder is 14 after subtracting 108 from 122.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 18

On to step 5:
18 can be fit into 143 7 times, resulting in a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 2367.0
If we subtract 126 from 143, we get 17.
Include the next digit (0) from the dividend after 17, then repeat: 170 / 18

Step 6:
18 can be fit into 170 9 times, resulting in a remainder of 8.
The next digit of our result is 9. 
Result so far: 23679.0
If we take 162 away from 170, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 23679.4
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
The number 18 fits into 80 4 times, leaving a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 23679.44
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 23679.44 and a remainder of 0.008.