We divide 80240820 by 521
We want to figure out the number of times 80240820 can be divided by 521.

On to step 1:
521 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 521

Going ahead to step 2:
521 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Bring next digit (2) of the dividend behind the 80 and repeat the process: 802 / 521

Let's proceed to step 3:
802 divided by 521 is 1 with a remainder of 281.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 521 from 802 leaves us with 281.
Append the next digit (4) from the dividend to 281 and continue with: 2814 / 521

Moving on to step 4:
The number 521 fits into 2814 5 times, leaving a remainder of 209.
Put 5 as the next digit of the answer. 
Result so far: 15.0
The remainder is 209 after subtracting 2605 from 2814.
Include the next digit (0) from the dividend after 209, then repeat: 2090 / 521

Let's proceed to step 5:
If we divide 2090 by 521, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 154.0
Deduct 2084 from 2090 and we're left with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 521

Moving on to step 6:
521 goes into 68 0 times with a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 1540.0
Subtract 0 from 68 to get 68.
Include the next digit (2) from the dividend after 68, then repeat: 682 / 521

Moving on to step 7:
521 can be fit into 682 1 times, resulting in a remainder of 161.
The next digit of our result is 1. 
Result so far: 15401.0
The remainder is 161 after subtracting 521 from 682.
Take the next digit (0) from the dividend and append it to 161, then repeat: 1610 / 521

Moving on to step 8:
The number 521 fits into 1610 3 times, leaving a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 154013.0
If we take 1563 away from 1610, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 9:
When dividing 470 by 521, we get 0 with a remainder of 470.
Record the quotient 0 as the next digit in the result. 
Result so far: 154013.0
Deduct 0 from 470 and we're left with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Let's proceed to step 10:
If we divide 4700 by 521, we get 9 and a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 154013.09
If we subtract 4689 from 4700, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 11:
The number 521 fits into 110 0 times, leaving a remainder of 110.
The number 0 becomes the next digit in our result. 
Result so far: 154013.09
If we subtract 0 from 110, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 12:
1100 divided by 521 is 2 with a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 154013.0902
Deduct 1042 from 1100 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 13:
580 divided by 521 is 1 with a remainder of 59.
The next digit of our result is 1. 
Result so far: 154013.09021
Deduct 521 from 580 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 14:
If we divide 590 by 521, we get 1 and a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 154013.090211
If we subtract 521 from 590, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

In conclusion, the division gives 154013.090211 with a balance of 6.9e-06.