We look at the division of 645775 by 12 
We want to divide 645775 by 12.

Let's proceed to step 1:
12 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 12

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
Subtracting 60 from 64 leaves us with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 12

Let's proceed to step 3:
12 goes into 45 3 times with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 53.0
The remainder is 9 after subtracting 36 from 45.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 12

Moving on to step 4:
The number 12 fits into 97 8 times, leaving a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 538.0
If we subtract 96 from 97, we get 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 12

On to step 5:
12 goes into 17 1 times with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 5381.0
Subtracting 12 from 17 leaves us with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 12

Let's proceed to step 6:
55 divided by 12 is 4 with a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 53814.0
Subtracting 48 from 55 leaves us 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.

On to step 7:
12 goes into 70 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 53814.5
Subtracting 60 from 70 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
When dividing 100 by 12, we get 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 53814.58
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.

On to step 9:
40 divided by 12 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 53814.583
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.

On to step 10:
When dividing 40 by 12, we get 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 53814.5833
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.

In conclusion, the division gives 53814.5833 with a balance of 4e-05.