Let's divide 334810 by 21
Let's see how many times 21 fits into 334810.

On to step 1:
21 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 21

Step 2:
When dividing 33 by 21, we get 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 12 after subtracting 21 from 33.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 21

Going ahead to step 3:
21 can be fit into 124 5 times, resulting in a remainder of 19.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we take 105 away from 124, we end up with 19.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 21

Step 4:
The number 21 fits into 198 9 times, leaving a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 159.0
Subtracting 189 from 198 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 21

Let's proceed to step 5:
91 divided by 21 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 1594.0
If we take 84 away from 91, we end up with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 21

Step 6:
The number 21 fits into 70 3 times, leaving a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 15943.0
Deduct 63 from 70 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 21, we get 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 15943.3
The remainder is 7 after subtracting 63 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 8:
When dividing 70 by 21, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 15943.33
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 15943.33, with a leftover of 0.007.