We divide 870140 by 80
We're looking to find how many times 80 goes into 870140.

Going ahead 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
If we subtract 0 from 8, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 80

Step 2:
The number 80 fits into 87 1 times, leaving a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 80 away from 87, we end up with 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 80

On to step 3:
80 can be fit into 70 0 times, resulting in a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 70 and we're left with 70.
Take the next digit (1) from the dividend and append it to 70, then repeat: 701 / 80

Going ahead to step 4:
80 can be fit into 701 8 times, resulting in a remainder of 61.
Use 8 as the next digit of our solution. 
Result so far: 108.0
Subtract 640 from 701 to get 61.
Bring next digit (4) of the dividend behind the 61 and repeat the process: 614 / 80

Going ahead to step 5:
614 divided by 80 is 7 with a remainder of 54.
Record the quotient 7 as the next digit in the result. 
Result so far: 1087.0
Subtracting 560 from 614 leaves us with 54.
Fetch the next digit (0) from the dividend, attach it to 54 and continue: 540 / 80

Moving on to step 6:
80 goes into 540 6 times with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 10876.0
If we subtract 480 from 540, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 7:
When dividing 600 by 80, we get 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 10876.7
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.

Let's proceed to step 8:
80 goes into 400 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 10876.75
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.

Advancing to step 9:
When dividing 0 by 80, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10876.75
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.

Going ahead to step 10:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10876.75
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 result is 10876.75 with a remainder of 0.0.