Let's divide 654639 by 12
We're looking to find how many times 12 goes into 654639.

Advancing to step 1:
If we divide 6 by 12, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 12

Going ahead to step 2:
If we divide 65 by 12, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 60 from 65 and we're left with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 12

Advancing to step 3:
12 goes into 54 4 times with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 54.0
If we take 48 away from 54, we end up with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 12

On to step 4:
12 goes into 66 5 times with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 545.0
Subtracting 60 from 66 leaves us with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 12

Advancing to step 5:
When dividing 63 by 12, we get 5 with a remainder of 3.
The next digit of our result is 5. 
Result so far: 5455.0
Subtracting 60 from 63 leaves us with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 12

Going ahead to step 6:
39 divided by 12 is 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 54553.0
Deduct 36 from 39 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
12 can be fit into 30 2 times, resulting in a remainder of 6.
The next digit of our result is 2. 
Result so far: 54553.2
If we take 24 away from 30, 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 8:
12 goes into 60 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 54553.25
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.

Moving on to step 9:
0 divided by 12 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 54553.25
If we take 0 away from 0, we end up 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.

Step 10:
0 divided by 12 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 54553.25
Deduct 0 from 0 and we're left 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.

The quotient of the division is 54553.25, and the remainder is 0.0.