We look at the division of 644477 by 12 
We're looking to find how many times 12 goes into 644477.

Step 1:
12 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 12

Moving on to step 2:
When dividing 64 by 12, we get 5 with a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 60 away from 64, we end up with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 12

Step 3:
12 goes into 44 3 times with a remainder of 8.
The next digit of our result is 3. 
Result so far: 53.0
If we subtract 36 from 44, we get 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 12

Advancing to step 4:
If we divide 84 by 12, we get 7 and a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 537.0
Deduct 84 from 84 and we're left with 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 12

Going ahead to step 5:
12 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 5370.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 12

On to step 6:
77 divided by 12 is 6 with a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 53706.0
If we subtract 72 from 77, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
The number 12 fits into 50 4 times, leaving a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 53706.4
Subtracting 48 from 50 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
20 divided by 12 is 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 53706.41
If we take 12 away from 20, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 53706.416
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 53706.4166
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 53706.4166, and the remainder is 8e-05.