648991 ÷ 12 
We're looking to find how many times 12 goes into 648991.

Advancing to step 1:
When dividing 6 by 12, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 12

Moving on to step 2:
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: 5.0
If we subtract 60 from 64, we get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 12

On to step 3:
12 can be fit into 48 4 times, resulting in a remainder of 0.
The next digit of our result is 4. 
Result so far: 54.0
Subtracting 48 from 48 leaves us with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 12

On to step 4:
9 divided by 12 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 540.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 12

Moving on to step 5:
12 can be fit into 99 8 times, resulting in a remainder of 3.
The next digit of our result is 8. 
Result so far: 5408.0
Deduct 96 from 99 and we're left with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 12

Let's proceed to step 6:
12 goes into 31 2 times with a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 54082.0
Deduct 24 from 31 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.

Advancing to step 7:
If we divide 70 by 12, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 54082.5
If we subtract 60 from 70, we 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.

On to step 8:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 54082.58
If we take 96 away from 100, 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 9:
40 divided by 12 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 54082.583
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 10:
40 divided by 12 is 3 with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 54082.5833
If we subtract 36 from 40, we 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.

Our division results in 54082.5833 with a remaining 4e-05.