Let's divide 338890 by 12
We want to divide 338890 by 12.

Step 1:
The number 12 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 12

On to step 2:
33 divided by 12 is 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 24 from 33 and we're left with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 12

Advancing to step 3:
98 divided by 12 is 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
Subtracting 96 from 98 leaves us with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 12

Moving on to step 4:
The number 12 fits into 28 2 times, leaving a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 282.0
Subtracting 24 from 28 leaves us with 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 12

Going ahead to step 5:
The number 12 fits into 49 4 times, leaving a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 2824.0
If we take 48 away from 49, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 12

Let's proceed to step 6:
When dividing 10 by 12, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 28240.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
100 divided by 12 is 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 28240.8
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
40 divided by 12 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 28240.83
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 28240.833
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 28240.833 with a remaining 0.0004.