We're dividing 663352 by 80 
Our goal is to divide 663352 by 80.

Advancing to step 1:
The number 80 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 80

Step 2:
When dividing 66 by 80, we get 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Take the next digit (3) from the dividend and append it to 66, then repeat: 663 / 80

Advancing to step 3:
The number 80 fits into 663 8 times, leaving a remainder of 23.
The next digit of our result is 8. 
Result so far: 8.0
Deduct 640 from 663 and we're left with 23.
Grab the next digit (3) from the dividend, add it to 23, then carry on: 233 / 80

Step 4:
When dividing 233 by 80, we get 2 with a remainder of 73.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
Deduct 160 from 233 and we're left with 73.
Include the next digit (5) from the dividend after 73, then repeat: 735 / 80

On to step 5:
When dividing 735 by 80, we get 9 with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 829.0
If we subtract 720 from 735, we get 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 80

Going ahead to step 6:
If we divide 152 by 80, we get 1 and a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 8291.0
Deduct 80 from 152 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 7:
80 can be fit into 720 9 times, resulting in a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 8291.9
The remainder is 0 after subtracting 720 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8291.9
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
80 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 8291.9
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 8291.9, with a leftover of 0.0.