339589 ÷ 18 
The aim is to understand the frequency of 18 in 339589.

Moving on to step 1:
When dividing 3 by 18, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 18

Let's proceed to step 2:
18 can be fit into 33 1 times, resulting in a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
If we take 18 away from 33, we end up with 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 18

Step 3:
18 can be fit into 159 8 times, resulting in a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtract 144 from 159 to get 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 18

Step 4:
18 goes into 155 8 times with a remainder of 11.
The next digit of our result is 8. 
Result so far: 188.0
Subtracting 144 from 155 leaves us with 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 18

Going ahead to step 5:
When dividing 118 by 18, we get 6 with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 1886.0
Subtracting 108 from 118 leaves us with 10.
Include the next digit (9) from the dividend after 10, then repeat: 109 / 18

Advancing to step 6:
When dividing 109 by 18, we get 6 with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 18866.0
If we subtract 108 from 109, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
18 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 18866.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
The number 18 fits into 100 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 18866.05
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
The number 18 fits into 100 5 times, leaving a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 18866.055
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 18866.055, and the remainder is 0.001.