We divide 420529 by 80
Our goal is to divide 420529 by 80.

On to step 1:
The number 80 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 80

Let's proceed to step 2:
When dividing 42 by 80, we get 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Bring next digit (0) of the dividend behind the 42 and repeat the process: 420 / 80

Let's proceed to step 3:
420 divided by 80 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 400 from 420, we get 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 80

On to step 4:
80 goes into 205 2 times with a remainder of 45.
The next digit of our result is 2. 
Result so far: 52.0
If we subtract 160 from 205, we get 45.
Include the next digit (2) from the dividend after 45, then repeat: 452 / 80

Step 5:
452 divided by 80 is 5 with a remainder of 52.
Record the quotient 5 as the next digit in the result. 
Result so far: 525.0
If we subtract 400 from 452, we get 52.
Take the next digit (9) from the dividend and append it to 52, then repeat: 529 / 80

Let's proceed to step 6:
529 divided by 80 is 6 with a remainder of 49.
Use 6 as the next digit of our solution. 
Result so far: 5256.0
If we take 480 away from 529, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 7:
490 divided by 80 is 6 with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 5256.6
Subtracting 480 from 490 leaves us 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 next digit of our result is 1. 
Result so far: 5256.61
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.

Moving on to step 9:
80 goes into 200 2 times with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 5256.612
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:
400 divided by 80 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 5256.6125
If we subtract 400 from 400, 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.

On to step 11:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5256.6125
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.

Advancing to step 12:
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: 5256.6125
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.

In conclusion, the division gives 5256.6125 with a balance of 0.0.