20790596 divided by 18 
The aim is to understand the frequency of 18 in 20790596.

Step 1:
If we divide 2 by 18, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 18

Let's proceed to step 2:
18 can be fit into 20 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 18 from 20 leaves us with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 18

Step 3:
18 goes into 27 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
The remainder is 9 after subtracting 18 from 27.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 18

Going ahead to step 4:
The number 18 fits into 99 5 times, leaving a remainder of 9.
The next digit of our result is 5. 
Result so far: 115.0
Deduct 90 from 99 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 18

Let's proceed to step 5:
18 goes into 90 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 1155.0
The remainder is 0 after subtracting 90 from 90.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 18

Step 6:
18 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 11550.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 18

Moving on to step 7:
The number 18 fits into 59 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 115503.0
The remainder is 5 after subtracting 54 from 59.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 18

Let's proceed to step 8:
18 can be fit into 56 3 times, resulting in a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 1155033.0
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.

Advancing to step 9:
20 divided by 18 is 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1155033.1
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.

Advancing to step 10:
18 can be fit into 20 1 times, resulting in a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1155033.11
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 quotient of the division is 1155033.11, and the remainder is 0.002.