We divide 870085 by 10
Let's see how many times 10 fits into 870085.

Advancing to step 1:
10 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 10

On to step 2:
When dividing 87 by 10, we get 8 with a remainder of 7.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 80 from 87 to get 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 10

Moving on to step 3:
10 goes into 70 7 times with a remainder of 0.
The next digit of our result is 7. 
Result so far: 87.0
Subtracting 70 from 70 leaves us with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 10

Advancing to step 4:
10 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 870.0
The remainder is 0 after subtracting 0 from 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 10

Moving on to step 5:
10 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 8700.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 10

Moving on to step 6:
If we divide 85 by 10, we get 8 and a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 87008.0
If we subtract 80 from 85, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
When dividing 50 by 10, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 87008.5
If we take 50 away from 50, 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.

Advancing to step 8:
The number 10 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 87008.5
If we take 0 away from 0, 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.

Going ahead to step 9:
0 divided by 10 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 87008.5
Subtract 0 from 0 to 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 final outcome is 87008.5, with a leftover of 0.0.