We look at the division of 390575 by 80 
Our goal is to divide 390575 by 80.

Going ahead to step 1:
If we divide 3 by 80, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 80

Moving on to step 2:
39 divided by 80 is 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Grab the next digit (0) from the dividend, add it to 39, then carry on: 390 / 80

Step 3:
80 can be fit into 390 4 times, resulting in a remainder of 70.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 320 away from 390, we end up with 70.
Bring next digit (5) of the dividend behind the 70 and repeat the process: 705 / 80

On to step 4:
The number 80 fits into 705 8 times, leaving a remainder of 65.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Subtracting 640 from 705 leaves us with 65.
Fetch the next digit (7) from the dividend, attach it to 65 and continue: 657 / 80

Let's proceed to step 5:
The number 80 fits into 657 8 times, leaving a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 488.0
If we take 640 away from 657, we end up with 17.
Bring next digit (5) of the dividend behind the 17 and repeat the process: 175 / 80

Moving on to step 6:
80 can be fit into 175 2 times, resulting in a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 4882.0
If we subtract 160 from 175, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
The number 80 fits into 150 1 times, leaving a remainder of 70.
Put 1 as the next digit of the answer. 
Result so far: 4882.1
If we take 80 away from 150, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 8:
80 can be fit into 700 8 times, resulting in a remainder of 60.
The next digit of our result is 8. 
Result so far: 4882.18
The remainder is 60 after subtracting 640 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
When dividing 600 by 80, we get 7 with a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 4882.187
Subtract 560 from 600 to 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.

Let's proceed to step 10:
80 goes into 400 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 4882.1875
Subtract 400 from 400 to 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.

Advancing to step 11:
0 divided by 80 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4882.1875
Subtract 0 from 0 to 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.

Advancing to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4882.1875
The remainder is 0 after subtracting 0 from 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 4882.1875 and a remainder of 0.0.