305581 divided by 12 
We want to divide 305581 by 12.

Going ahead to step 1:
The number 12 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 12

On to step 2:
If we divide 30 by 12, we get 2 and a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 24 from 30 leaves us with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 12

Let's proceed to step 3:
If we divide 65 by 12, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 25.0
If we take 60 away from 65, we end up with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 12

Going ahead to step 4:
If we divide 55 by 12, we get 4 and a remainder of 7.
The next digit of our result is 4. 
Result so far: 254.0
Subtracting 48 from 55 leaves us with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 12

Step 5:
The number 12 fits into 78 6 times, leaving a remainder of 6.
The next digit of our result is 6. 
Result so far: 2546.0
Subtracting 72 from 78 leaves us with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 12

Let's proceed to step 6:
12 goes into 61 5 times with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 25465.0
If we subtract 60 from 61, we get 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 7:
10 divided by 12 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 25465.0
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.

Moving on to step 8:
When dividing 100 by 12, we get 8 with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 25465.08
Subtract 96 from 100 to get 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 goes into 40 3 times with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 25465.083
If we take 36 away from 40, we end up 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.

Going ahead to step 10:
12 goes into 40 3 times with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 25465.0833
Subtracting 36 from 40 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.

The final outcome is 25465.0833, with a leftover of 4e-05.