712496 divided by 18 
The aim is to understand the frequency of 18 in 712496.

Let's proceed to step 1:
7 divided by 18 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 18

On to step 2:
18 goes into 71 3 times with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 54 away from 71, we end up with 17.
Fetch the next digit (2) from the dividend, attach it to 17 and continue: 172 / 18

Moving on to step 3:
172 divided by 18 is 9 with a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 39.0
Deduct 162 from 172 and we're left with 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 18

Let's proceed to step 4:
18 can be fit into 104 5 times, resulting in a remainder of 14.
The number 5 becomes the next digit in our result. 
Result so far: 395.0
Subtract 90 from 104 to get 14.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 18

Let's proceed to step 5:
If we divide 149 by 18, we get 8 and a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 3958.0
Deduct 144 from 149 and we're left with 5.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 18

Moving on to step 6:
The number 18 fits into 56 3 times, leaving a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 39583.0
Subtract 54 from 56 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
18 can be fit into 20 1 times, resulting in a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 39583.1
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
If we divide 20 by 18, we get 1 and a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 39583.11
If we subtract 18 from 20, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 39583.11, with a leftover of 0.002.