511099 divided by 80 
We're looking to find how many times 80 goes into 511099.

Step 1:
When dividing 5 by 80, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 80

On to step 2:
The number 80 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Grab the next digit (1) from the dividend, add it to 51, then carry on: 511 / 80

Let's proceed to step 3:
If we divide 511 by 80, we get 6 and a remainder of 31.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 480 from 511, we get 31.
Include the next digit (0) from the dividend after 31, then repeat: 310 / 80

Step 4:
80 can be fit into 310 3 times, resulting in a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 63.0
If we subtract 240 from 310, we get 70.
Grab the next digit (9) from the dividend, add it to 70, then carry on: 709 / 80

Advancing to step 5:
When dividing 709 by 80, we get 8 with a remainder of 69.
Record the quotient 8 as the next digit in the result. 
Result so far: 638.0
Deduct 640 from 709 and we're left with 69.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 80

Step 6:
80 goes into 699 8 times with a remainder of 59.
The number 8 becomes the next digit in our result. 
Result so far: 6388.0
Subtracting 640 from 699 leaves us 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.

Step 7:
When dividing 590 by 80, we get 7 with a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 6388.7
If we subtract 560 from 590, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
300 divided by 80 is 3 with a remainder of 60.
Write down 3 as next digit of the result. 
Result so far: 6388.73
Subtracting 240 from 300 leaves us 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.

Let's proceed 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: 6388.737
If we take 560 away from 600, 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:
If we divide 400 by 80, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 6388.7375
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6388.7375
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.

On to step 12:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6388.7375
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.

The quotient of the division is 6388.7375, and the remainder is 0.0.