Let's divide 678921 by 18
Our goal is to divide 678921 by 18.

Advancing to step 1:
18 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 18

Moving on to step 2:
67 divided by 18 is 3 with a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 54 from 67 and we're left with 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 18

On to step 3:
18 goes into 138 7 times with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
If we subtract 126 from 138, we get 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 18

Going ahead to step 4:
The number 18 fits into 129 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 377.0
If we subtract 126 from 129, we get 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 18

Let's proceed to step 5:
32 divided by 18 is 1 with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 3771.0
Subtract 18 from 32 to get 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 18

On to step 6:
18 goes into 141 7 times with a remainder of 15.
Write down 7 as next digit of the result. 
Result so far: 37717.0
If we take 126 away from 141, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
When dividing 150 by 18, we get 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 37717.8
If we subtract 144 from 150, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
If we divide 60 by 18, we get 3 and a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 37717.83
If we take 54 away from 60, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
60 divided by 18 is 3 with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 37717.833
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The quotient of the division is 37717.833, and the remainder is 0.0006.