We're dividing 820635 by 3 
Let's see how many times 3 fits into 820635.

Step 1:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 6 from 8 and we're left with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 3

Advancing to step 2:
The number 3 fits into 22 7 times, leaving a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Subtracting 21 from 22 leaves us with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 3

On to step 3:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 273.0
Subtracting 9 from 10 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 3

Moving on to step 4:
If we divide 16 by 3, we get 5 and a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 2735.0
Deduct 15 from 16 and we're left with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 3

Let's proceed to step 5:
When dividing 13 by 3, we get 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 27354.0
If we take 12 away from 13, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 3

Let's proceed to step 6:
3 can be fit into 15 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 273545.0
The remainder is 0 after subtracting 15 from 15.
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:
When dividing 0 by 3, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 273545.0
Deduct 0 from 0 and we're left 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 8:
0 divided by 3 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 273545.0
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 result is 273545.0 with a remainder of 0.0.