Let's divide 943021 by 3
We want to divide 943021 by 3.

Let's proceed to step 1:
9 divided by 3 is 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 9 from 9 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

On to step 2:
If we divide 4 by 3, we get 1 and a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we subtract 3 from 4, we get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 3

Step 3:
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: 314.0
Subtract 12 from 13 to get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 3

On to step 4:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 3143.0
The remainder is 1 after subtracting 9 from 10.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 3

On to step 5:
If we divide 12 by 3, we get 4 and a remainder of 0.
The next digit of our result is 4. 
Result so far: 31434.0
If we take 12 away from 12, we end up with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 3

On to step 6:
If we divide 1 by 3, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 314340.0
Deduct 0 from 1 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.

Step 7:
10 divided by 3 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 314340.3
Subtracting 9 from 10 leaves us 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:
When dividing 10 by 3, we get 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 314340.33
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.

Our division results in 314340.33 with a remaining 0.001.