Let's divide 635859 by 80
We want to divide 635859 by 80.

Step 1:
80 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 80

Advancing to step 2:
If we divide 63 by 80, we get 0 and a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Take the next digit (5) from the dividend and append it to 63, then repeat: 635 / 80

On to step 3:
The number 80 fits into 635 7 times, leaving a remainder of 75.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtracting 560 from 635 leaves us with 75.
Grab the next digit (8) from the dividend, add it to 75, then carry on: 758 / 80

Going ahead to step 4:
80 goes into 758 9 times with a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 79.0
Subtract 720 from 758 to get 38.
Grab the next digit (5) from the dividend, add it to 38, then carry on: 385 / 80

Advancing to step 5:
If we divide 385 by 80, we get 4 and a remainder of 65.
Write down 4 as next digit of the result. 
Result so far: 794.0
Subtract 320 from 385 to get 65.
Fetch the next digit (9) from the dividend, attach it to 65 and continue: 659 / 80

Step 6:
If we divide 659 by 80, we get 8 and a remainder of 19.
The next digit of our result is 8. 
Result so far: 7948.0
Subtracting 640 from 659 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
80 can be fit into 190 2 times, resulting in a remainder of 30.
The next digit of our result is 2. 
Result so far: 7948.2
Subtract 160 from 190 to 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.

On to step 8:
80 goes into 300 3 times with a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 7948.23
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.

Let's proceed to step 9:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 7948.237
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:
80 goes into 400 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 7948.2375
Deduct 400 from 400 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 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7948.2375
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.

Let's proceed to step 12:
0 divided by 80 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7948.2375
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.

The quotient of the division is 7948.2375, and the remainder is 0.0.