We divide 836813 by 3
We want to figure out the number of times 836813 can be divided by 3.

On to step 1:
8 divided by 3 is 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 6 from 8, we get 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 3

Step 2:
The number 3 fits into 23 7 times, leaving a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Deduct 21 from 23 and we're left with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 3

Moving on to step 3:
3 can be fit into 26 8 times, resulting in a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 278.0
Subtract 24 from 26 to get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 3

Moving on to step 4:
3 can be fit into 28 9 times, resulting in a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 2789.0
Deduct 27 from 28 and we're left with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 3

Step 5:
When dividing 11 by 3, we get 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 27893.0
Subtract 9 from 11 to get 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 3

Moving on to step 6:
If we divide 23 by 3, we get 7 and a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 278937.0
If we subtract 21 from 23, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
If we divide 20 by 3, we get 6 and a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 278937.6
If we subtract 18 from 20, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 278937.66
Subtract 18 from 20 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The quotient of the division is 278937.66, and the remainder is 0.002.