Let's divide 286440 by 18
The aim is to understand the frequency of 18 in 286440.

Step 1:
2 divided by 18 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 18

Moving on to step 2:
28 divided by 18 is 1 with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 18 from 28 to get 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 18

Going ahead to step 3:
When dividing 106 by 18, we get 5 with a remainder of 16.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 90 from 106 to get 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 18

On to step 4:
18 can be fit into 164 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 159.0
Subtracting 162 from 164 leaves us with 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 18

Let's proceed to step 5:
If we divide 24 by 18, we get 1 and a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 1591.0
If we take 18 away from 24, we end up with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 18

Moving on to step 6:
18 goes into 60 3 times with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 15913.0
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
If we divide 60 by 18, we get 3 and a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 15913.3
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
60 divided by 18 is 3 with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 15913.33
The remainder is 6 after subtracting 54 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 15913.33 with a balance of 0.006.