We look at the division of 851387 by 1 
Our goal is to divide 851387 by 1.

Step 1:
If we divide 8 by 1, we get 8 and a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 8 away from 8, we end up with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 1

Moving on to step 2:
5 divided by 1 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 85.0
If we take 5 away from 5, we end up with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 1

Advancing to step 3:
1 can be fit into 1 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 851.0
Subtracting 1 from 1 leaves us with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 1

Going ahead to step 4:
1 goes into 3 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 8513.0
Deduct 3 from 3 and we're left with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 1

Let's proceed to step 5:
1 can be fit into 8 8 times, resulting in a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 85138.0
Subtracting 8 from 8 leaves us with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 1

Let's proceed to step 6:
The number 1 fits into 7 7 times, leaving a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 851387.0
If we take 7 away from 7, 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 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 851387.0
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 8:
When dividing 0 by 1, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 851387.0
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.

Our division results in 851387.0 with a remaining 0.0.