We look at the division of 54642 by 12 
Our goal is to divide 54642 by 12.

Let's proceed to step 1:
When dividing 5 by 12, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 12

Going ahead to step 2:
When dividing 54 by 12, we get 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 48 from 54 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 12

Going ahead to step 3:
12 goes into 66 5 times with a remainder of 6.
The next digit of our result is 5. 
Result so far: 45.0
If we subtract 60 from 66, we get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 12

Let's proceed to step 4:
The number 12 fits into 64 5 times, leaving a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 455.0
Deduct 60 from 64 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 12

Going ahead to step 5:
12 can be fit into 42 3 times, resulting in a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 4553.0
If we take 36 away from 42, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 6:
60 divided by 12 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 4553.5
Subtract 60 from 60 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
If we divide 0 by 12, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4553.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4553.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 4553.5 and a remainder of 0.0.