856870 ÷ 1 
We're looking to find how many times 1 goes into 856870.

Advancing to step 1:
The number 1 fits into 8 8 times, leaving a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 0 after subtracting 8 from 8.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

Going ahead to step 2:
1 can be fit into 5 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 85.0
If we take 5 away from 5, we end up with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 1

Moving on to step 3:
1 can be fit into 6 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 856.0
If we subtract 6 from 6, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 1

On to step 4:
1 goes into 8 8 times with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 8568.0
Subtracting 8 from 8 leaves us with 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 1

Advancing to step 5:
1 goes into 7 7 times with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 85687.0
Deduct 7 from 7 and we're left with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 1

On to step 6:
1 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 856870.0
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.

Step 7:
1 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 856870.0
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.

Advancing to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 856870.0
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.

The quotient of the division is 856870.0, and the remainder is 0.0.