We divide 812881 by 3
We want to figure out the number of times 812881 can be divided by 3.

On to step 1:
8 divided by 3 is 2 with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 6 from 8, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 3

Step 2:
21 divided by 3 is 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
The remainder is 0 after subtracting 21 from 21.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 3

Advancing to step 3:
The number 3 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 270.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 3

On to step 4:
28 divided by 3 is 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 2709.0
If we subtract 27 from 28, we get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 3

On to step 5:
3 can be fit into 18 6 times, resulting in a remainder of 0.
The next digit of our result is 6. 
Result so far: 27096.0
If we subtract 18 from 18, we get 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 3

Let's proceed to step 6:
When dividing 1 by 3, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 270960.0
If we take 0 away from 1, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
The number 3 fits into 10 3 times, leaving a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 270960.3
Deduct 9 from 10 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 270960.33
Deduct 9 from 10 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 270960.33, with a leftover of 0.001.