We're dividing 308690 by 12 
We want to divide 308690 by 12.

Going ahead to step 1:
3 divided by 12 is 0 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.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 12

Moving on to step 2:
12 can be fit into 30 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 24 from 30 leaves us with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 12

Step 3:
12 goes into 68 5 times with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
If we take 60 away from 68, we end up with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 12

Advancing to step 4:
The number 12 fits into 86 7 times, leaving a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 257.0
Subtract 84 from 86 to get 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 12

Advancing to step 5:
When dividing 29 by 12, we get 2 with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2572.0
The remainder is 5 after subtracting 24 from 29.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 12

On to step 6:
12 goes into 50 4 times with a remainder of 2.
The next digit of our result is 4. 
Result so far: 25724.0
If we take 48 away from 50, 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.

Moving on to step 7:
The number 12 fits into 20 1 times, leaving a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 25724.1
If we subtract 12 from 20, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 25724.16
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 25724.166
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 25724.166 and a remainder of 0.0008.