2815 divided by 12 
We want to divide 2815 by 12.

Advancing to step 1:
The number 12 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 12

Advancing to step 2:
12 can be fit into 28 2 times, resulting in a remainder of 4.
The next digit of our result is 2. 
Result so far: 2.0
If we take 24 away from 28, we end up with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 12

Advancing to step 3:
If we divide 41 by 12, we get 3 and a remainder of 5.
The next digit of our result is 3. 
Result so far: 23.0
Subtract 36 from 41 to get 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 12

Moving on to step 4:
55 divided by 12 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 234.0
Deduct 48 from 55 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.

Step 5:
If we divide 70 by 12, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 234.5
Subtract 60 from 70 to get 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 6:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 234.58
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.

Step 7:
12 goes into 40 3 times with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 234.583
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.

Going ahead to step 8:
12 can be fit into 40 3 times, resulting in a remainder of 4.
The next digit of our result is 3. 
Result so far: 234.5833
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.

After the division, we end up with 234.5833 and a remainder of 4e-05.