We divide 42613 by 12
Let's see how many times 12 fits into 42613.

On to step 1:
The number 12 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 12

On to step 2:
When dividing 42 by 12, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 36 from 42 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 12

Let's proceed to step 3:
66 divided by 12 is 5 with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 35.0
If we subtract 60 from 66, we get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 12

Advancing to step 4:
12 goes into 61 5 times with a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 355.0
If we subtract 60 from 61, we get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 12

Step 5:
13 divided by 12 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 3551.0
If we take 12 away from 13, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On 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: 3551.0
The remainder is 10 after subtracting 0 from 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 7:
12 can be fit into 100 8 times, resulting in a remainder of 4.
The next digit of our result is 8. 
Result so far: 3551.08
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.

Let's proceed to step 8:
12 goes into 40 3 times with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 3551.083
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.

On to step 9:
When dividing 40 by 12, we get 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 3551.0833
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.

The final outcome is 3551.0833, with a leftover of 4e-05.