We divide 921209 by 3
Our goal is to divide 921209 by 3.

On to step 1:
The number 3 fits into 9 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 9 from 9 and we're left with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 3

On to step 2:
3 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 30.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 3

Advancing to step 3:
When dividing 21 by 3, we get 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 307.0
The remainder is 0 after subtracting 21 from 21.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 3

On to step 4:
2 divided by 3 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 3070.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 3

Step 5:
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: 30706.0
Subtracting 18 from 20 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 3

Step 6:
3 can be fit into 29 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 307069.0
The remainder is 2 after subtracting 27 from 29.
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:
The number 3 fits into 20 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 307069.6
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.

On to step 8:
20 divided by 3 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 307069.66
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.

The final result is 307069.66 with a remainder of 0.002.