We divide 666803 by 80
We want to divide 666803 by 80.

On to step 1:
6 divided by 80 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 80

Let's proceed to step 2:
When dividing 66 by 80, we get 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Take the next digit (6) from the dividend and append it to 66, then repeat: 666 / 80

Going ahead to step 3:
80 can be fit into 666 8 times, resulting in a remainder of 26.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 640 from 666 leaves us with 26.
Append the next digit (8) from the dividend to 26 and continue with: 268 / 80

Moving on to step 4:
268 divided by 80 is 3 with a remainder of 28.
Use 3 as the next digit of our solution. 
Result so far: 83.0
Deduct 240 from 268 and we're left with 28.
Include the next digit (0) from the dividend after 28, then repeat: 280 / 80

Going ahead to step 5:
280 divided by 80 is 3 with a remainder of 40.
Record the quotient 3 as the next digit in the result. 
Result so far: 833.0
If we take 240 away from 280, we end up with 40.
Bring next digit (3) of the dividend behind the 40 and repeat the process: 403 / 80

Going ahead to step 6:
If we divide 403 by 80, we get 5 and a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 8335.0
If we take 400 away from 403, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
80 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 8335.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
80 can be fit into 300 3 times, resulting in a remainder of 60.
Put 3 as the next digit of the answer. 
Result so far: 8335.03
Deduct 240 from 300 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
80 goes into 600 7 times with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 8335.037
Deduct 560 from 600 and we're left 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:
When dividing 400 by 80, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 8335.0375
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:
If we divide 0 by 80, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 8335.0375
Deduct 0 from 0 and we're left 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:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8335.0375
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.

In conclusion, the division gives 8335.0375 with a balance of 0.0.