We look at the division of 803998 by 12 
Our goal is to divide 803998 by 12.

Moving on to step 1:
12 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 12

Let's proceed to step 2:
12 goes into 80 6 times with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 8 after subtracting 72 from 80.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 12

Moving on to step 3:
If we divide 83 by 12, we get 6 and a remainder of 11.
The next digit of our result is 6. 
Result so far: 66.0
If we subtract 72 from 83, we get 11.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 12

Advancing to step 4:
When dividing 119 by 12, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 669.0
If we take 108 away from 119, we end up with 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 12

Advancing to step 5:
The number 12 fits into 119 9 times, leaving a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 6699.0
Subtract 108 from 119 to get 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 12

Step 6:
The number 12 fits into 118 9 times, leaving a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 66999.0
Subtract 108 from 118 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.

Going ahead to step 7:
100 divided by 12 is 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 66999.8
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 66999.83
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 66999.833
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 66999.833 with a remaining 0.0004.