573521 divided by 80 
We want to figure out the number of times 573521 can be divided by 80.

On to step 1:
80 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 80

On to step 2:
80 goes into 57 0 times with a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Append the next digit (3) from the dividend to 57 and continue with: 573 / 80

Moving on to step 3:
573 divided by 80 is 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 560 away from 573, we end up with 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 80

Advancing to step 4:
When dividing 135 by 80, we get 1 with a remainder of 55.
Write down 1 as next digit of the result. 
Result so far: 71.0
If we take 80 away from 135, we end up with 55.
Take the next digit (2) from the dividend and append it to 55, then repeat: 552 / 80

Moving on to step 5:
80 goes into 552 6 times with a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 716.0
Subtract 480 from 552 to get 72.
Grab the next digit (1) from the dividend, add it to 72, then carry on: 721 / 80

Going ahead to step 6:
The number 80 fits into 721 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 7169.0
If we subtract 720 from 721, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
If we divide 10 by 80, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 7169.0
Deduct 0 from 10 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.

Advancing to step 8:
If we divide 100 by 80, we get 1 and a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 7169.01
Deduct 80 from 100 and we're left 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.

Going ahead to step 9:
200 divided by 80 is 2 with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 7169.012
If we subtract 160 from 200, 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:
If we divide 400 by 80, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 7169.0125
If we take 400 away from 400, 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 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 7169.0125
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.

Let's proceed to step 12:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 7169.0125
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.

Our division results in 7169.0125 with a remaining 0.0.