We divide 360821 by 3
We're looking to find how many times 3 goes into 360821.

On to step 1:
3 divided by 3 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 3 from 3 and we're left with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 3

Going ahead to step 2:
6 divided by 3 is 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 6 from 6 and we're left with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 3

Step 3:
If we divide 0 by 3, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 120.0
If we subtract 0 from 0, we get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 3

Advancing to step 4:
8 divided by 3 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 1202.0
Subtract 6 from 8 to get 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 3

Moving on to step 5:
22 divided by 3 is 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 12027.0
Deduct 21 from 22 and we're left with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 3

Let's proceed to step 6:
When dividing 11 by 3, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 120273.0
The remainder is 2 after subtracting 9 from 11.
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 7:
When dividing 20 by 3, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 120273.6
If we take 18 away from 20, we end up with 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:
When dividing 20 by 3, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 120273.66
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.

Our division results in 120273.66 with a remaining 0.002.