503321 ÷ 80 
Our goal is to divide 503321 by 80.

Let's proceed to step 1:
The number 80 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 80

Moving on to step 2:
80 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 50 leaves us with 50.
Bring next digit (3) of the dividend behind the 50 and repeat the process: 503 / 80

Step 3:
When dividing 503 by 80, we get 6 with a remainder of 23.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 480 from 503, we get 23.
Append the next digit (3) from the dividend to 23 and continue with: 233 / 80

Advancing to step 4:
80 goes into 233 2 times with a remainder of 73.
Record the quotient 2 as the next digit in the result. 
Result so far: 62.0
Subtracting 160 from 233 leaves us with 73.
Fetch the next digit (2) from the dividend, attach it to 73 and continue: 732 / 80

Step 5:
80 goes into 732 9 times with a remainder of 12.
The next digit of our result is 9. 
Result so far: 629.0
If we take 720 away from 732, we end up with 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 80

On to step 6:
When dividing 121 by 80, we get 1 with a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 6291.0
If we subtract 80 from 121, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 7:
80 goes into 410 5 times with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 6291.5
Deduct 400 from 410 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.

Let's proceed to step 8:
The number 80 fits into 100 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 6291.51
Subtracting 80 from 100 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
200 divided by 80 is 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 6291.512
If we take 160 away from 200, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
When dividing 400 by 80, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 6291.5125
Subtract 400 from 400 to get 0.
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 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6291.5125
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.

Step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6291.5125
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 6291.5125 with a balance of 0.0.