320579 divided by 80 
Let's see how many times 80 fits into 320579.

Going ahead to step 1:
The number 80 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 80

Going ahead to step 2:
80 goes into 32 0 times with a remainder of 32.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 32 and we're left with 32.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 80

Step 3:
The number 80 fits into 320 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 320 away from 320, we end up with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 80

On to step 4:
5 divided by 80 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 80

Let's proceed to step 5:
When dividing 57 by 80, we get 0 with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 400.0
If we subtract 0 from 57, we get 57.
Append the next digit (9) from the dividend to 57 and continue with: 579 / 80

Advancing to step 6:
80 can be fit into 579 7 times, resulting in a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 4007.0
The remainder is 19 after subtracting 560 from 579.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
80 can be fit into 190 2 times, resulting in a remainder of 30.
The next digit of our result is 2. 
Result so far: 4007.2
The remainder is 30 after subtracting 160 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
When dividing 300 by 80, we get 3 with a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 4007.23
If we take 240 away from 300, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 9:
600 divided by 80 is 7 with a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 4007.237
If we subtract 560 from 600, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 4007.2375
Subtracting 400 from 400 leaves us 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 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4007.2375
Subtracting 0 from 0 leaves us 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.

Going ahead to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4007.2375
If we subtract 0 from 0, we 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.

After the division, we end up with 4007.2375 and a remainder of 0.0.