We look at the division of 843987 by 3 
We want to divide 843987 by 3.

Advancing to step 1:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 6 from 8 to get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 3

On to step 2:
When dividing 24 by 3, we get 8 with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 28.0
Subtracting 24 from 24 leaves us with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 3

Advancing to step 3:
3 goes into 3 1 times with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 281.0
Deduct 3 from 3 and we're left with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

Step 4:
If we divide 9 by 3, we get 3 and a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 2813.0
If we subtract 9 from 9, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 3

Let's proceed to step 5:
The number 3 fits into 8 2 times, leaving a remainder of 2.
The next digit of our result is 2. 
Result so far: 28132.0
Subtracting 6 from 8 leaves us with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 3

Advancing to step 6:
3 goes into 27 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 281329.0
If we take 27 away from 27, 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 7:
If we divide 0 by 3, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 281329.0
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.

On to step 8:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 281329.0
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.

The final outcome is 281329.0, with a leftover of 0.0.