712874 divided by 18 
The aim is to understand the frequency of 18 in 712874.

Step 1:
The number 18 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 18

Let's proceed to step 2:
The number 18 fits into 71 3 times, leaving a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 54 from 71, we get 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 18

Step 3:
If we divide 172 by 18, we get 9 and a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
The remainder is 10 after subtracting 162 from 172.
Fetch the next digit (8) from the dividend, attach it to 10 and continue: 108 / 18

Going ahead to step 4:
18 goes into 108 6 times with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 396.0
If we take 108 away from 108, we end up with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 18

Let's proceed to step 5:
7 divided by 18 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 3960.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 18

Moving on to step 6:
If we divide 74 by 18, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 39604.0
Deduct 72 from 74 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
20 divided by 18 is 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 39604.1
Subtracting 18 from 20 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
When dividing 20 by 18, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 39604.11
If we take 18 away from 20, we end up with 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 39604.11, with a leftover of 0.002.