748289 ÷ 18 
The aim is to understand the frequency of 18 in 748289.

Moving on to step 1:
18 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 18

Step 2:
74 divided by 18 is 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 72 from 74 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 18

Going ahead to step 3:
When dividing 28 by 18, we get 1 with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 41.0
The remainder is 10 after subtracting 18 from 28.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 18

Advancing to step 4:
18 goes into 102 5 times with a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 415.0
Subtracting 90 from 102 leaves us with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 18

Let's proceed to step 5:
If we divide 128 by 18, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 4157.0
If we subtract 126 from 128, we get 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 18

Moving on to step 6:
When dividing 29 by 18, we get 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 41571.0
Subtract 18 from 29 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
18 goes into 110 6 times with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 41571.6
Subtract 108 from 110 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.

Advancing to step 8:
The number 18 fits into 20 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 41571.61
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.

On to step 9:
18 can be fit into 20 1 times, resulting in a remainder of 2.
The next digit of our result is 1. 
Result so far: 41571.611
Subtract 18 from 20 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.

The final result is 41571.611 with a remainder of 0.0002.