424072 ÷ 521 
We're looking to find how many times 521 goes into 424072.

Advancing to step 1:
The number 521 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 521

Moving on to step 2:
The number 521 fits into 42 0 times, leaving a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 521

Let's proceed to step 3:
When dividing 424 by 521, we get 0 with a remainder of 424.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 424 after subtracting 0 from 424.
Append the next digit (0) from the dividend to 424 and continue with: 4240 / 521

Going ahead to step 4:
The number 521 fits into 4240 8 times, leaving a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 4168 away from 4240, we end up with 72.
Take the next digit (7) from the dividend and append it to 72, then repeat: 727 / 521

Step 5:
727 divided by 521 is 1 with a remainder of 206.
Write down 1 as next digit of the result. 
Result so far: 81.0
If we take 521 away from 727, we end up with 206.
Fetch the next digit (2) from the dividend, attach it to 206 and continue: 2062 / 521

Step 6:
The number 521 fits into 2062 3 times, leaving a remainder of 499.
Record the quotient 3 as the next digit in the result. 
Result so far: 813.0
If we take 1563 away from 2062, we end up with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

Let's proceed to step 7:
4990 divided by 521 is 9 with a remainder of 301.
The number 9 becomes the next digit in our result. 
Result so far: 813.9
Subtracting 4689 from 4990 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Moving on to step 8:
521 goes into 3010 5 times with a remainder of 405.
Use 5 as the next digit of our solution. 
Result so far: 813.95
If we subtract 2605 from 3010, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Let's proceed to step 9:
4050 divided by 521 is 7 with a remainder of 403.
Put 7 as the next digit of the answer. 
Result so far: 813.957
If we take 3647 away from 4050, we end up with 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Step 10:
521 goes into 4030 7 times with a remainder of 383.
Write down 7 as next digit of the result. 
Result so far: 813.9577
Deduct 3647 from 4030 and we're left with 383.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

In conclusion, the division gives 813.9577 with a balance of 0.00383.