We divide 680555 by 18
The aim is to understand the frequency of 18 in 680555.

Moving on to step 1:
If we divide 6 by 18, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 18

Step 2:
The number 18 fits into 68 3 times, leaving a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 14 after subtracting 54 from 68.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 18

On to step 3:
If we divide 140 by 18, we get 7 and a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we subtract 126 from 140, we get 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 18

Going ahead to step 4:
When dividing 145 by 18, we get 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 378.0
If we subtract 144 from 145, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 18

Advancing to step 5:
If we divide 15 by 18, we get 0 and a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 3780.0
Subtract 0 from 15 to get 15.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 18

Step 6:
18 can be fit into 155 8 times, resulting in a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 37808.0
The remainder is 11 after subtracting 144 from 155.
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:
110 divided by 18 is 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 37808.6
Subtracting 108 from 110 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.

Moving on to step 8:
The number 18 fits into 20 1 times, leaving a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 37808.61
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.

Moving on to step 9:
If we divide 20 by 18, we get 1 and a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 37808.611
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 quotient of the division is 37808.611, and the remainder is 0.0002.