879985 ÷ 80 
We want to divide 879985 by 80.

Advancing to step 1:
80 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 80

Going ahead to step 2:
If we divide 87 by 80, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 80 from 87 and we're left with 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 80

Step 3:
80 can be fit into 79 0 times, resulting in a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 79, we get 79.
Fetch the next digit (9) from the dividend, attach it to 79 and continue: 799 / 80

Moving on to step 4:
The number 80 fits into 799 9 times, leaving a remainder of 79.
Write down 9 as next digit of the result. 
Result so far: 109.0
If we subtract 720 from 799, we get 79.
Bring next digit (8) of the dividend behind the 79 and repeat the process: 798 / 80

Moving on to step 5:
When dividing 798 by 80, we get 9 with a remainder of 78.
Record the quotient 9 as the next digit in the result. 
Result so far: 1099.0
The remainder is 78 after subtracting 720 from 798.
Take the next digit (5) from the dividend and append it to 78, then repeat: 785 / 80

Moving on to step 6:
The number 80 fits into 785 9 times, leaving a remainder of 65.
Use 9 as the next digit of our solution. 
Result so far: 10999.0
If we take 720 away from 785, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 7:
If we divide 650 by 80, we get 8 and a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 10999.8
The remainder is 10 after subtracting 640 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
The number 80 fits into 100 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 10999.81
If we take 80 away from 100, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
80 can be fit into 200 2 times, resulting in a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 10999.812
If we take 160 away from 200, 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.

On to step 10:
80 goes into 400 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 10999.8125
If we take 400 away from 400, we end up 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.

Step 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 10999.8125
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.

Step 12:
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: 10999.8125
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.

In conclusion, the division gives 10999.8125 with a balance of 0.0.