Let's divide 879163 by 80
We want to divide 879163 by 80.

Going ahead to step 1:
The number 80 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 80

On to step 2:
If we divide 87 by 80, we get 1 and a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 80 from 87, we get 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 80

Advancing to step 3:
80 can be fit into 79 0 times, resulting in a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 79 leaves us with 79.
Grab the next digit (1) from the dividend, add it to 79, then carry on: 791 / 80

Going ahead to step 4:
80 goes into 791 9 times with a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
Subtract 720 from 791 to get 71.
Grab the next digit (6) from the dividend, add it to 71, then carry on: 716 / 80

Going ahead to step 5:
80 goes into 716 8 times with a remainder of 76.
Use 8 as the next digit of our solution. 
Result so far: 1098.0
The remainder is 76 after subtracting 640 from 716.
Grab the next digit (3) from the dividend, add it to 76, then carry on: 763 / 80

On to step 6:
80 goes into 763 9 times with a remainder of 43.
Record the quotient 9 as the next digit in the result. 
Result so far: 10989.0
Deduct 720 from 763 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
When dividing 430 by 80, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 10989.5
Deduct 400 from 430 and we're left with 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:
If we divide 300 by 80, we get 3 and a remainder of 60.
Write down 3 as next digit of the result. 
Result so far: 10989.53
If we take 240 away from 300, we end up 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.

Going ahead to step 9:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 10989.537
If we subtract 560 from 600, we 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.

On to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 10989.5375
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:
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: 10989.5375
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.

Going ahead to step 12:
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: 10989.5375
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.

The final outcome is 10989.5375, with a leftover of 0.0.