Let's divide 64845209 by 12
We want to divide 64845209 by 12.

On to step 1:
When dividing 6 by 12, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 12

Let's proceed to step 2:
When dividing 64 by 12, we get 5 with a remainder of 4.
The next digit of our result is 5. 
Result so far: 5.0
If we take 60 away from 64, we end up with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 12

Going ahead to step 3:
12 goes into 48 4 times with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 54.0
Subtract 48 from 48 to get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 12

Moving on to step 4:
4 divided by 12 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 540.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 12

Going ahead to step 5:
When dividing 45 by 12, we get 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 5403.0
If we subtract 36 from 45, we get 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 12

Let's proceed to step 6:
When dividing 92 by 12, we get 7 with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 54037.0
The remainder is 8 after subtracting 84 from 92.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 12

Advancing to step 7:
When dividing 80 by 12, we get 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 540376.0
Subtracting 72 from 80 leaves us with 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 12

Moving on to step 8:
12 can be fit into 89 7 times, resulting in a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 5403767.0
If we subtract 84 from 89, 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.

Advancing to step 9:
The number 12 fits into 50 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 5403767.4
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.

Step 10:
If we divide 20 by 12, we get 1 and a remainder of 8.
The next digit of our result is 1. 
Result so far: 5403767.41
Subtracting 12 from 20 leaves us 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.

Let's proceed to step 11:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 5403767.416
Subtract 72 from 80 to 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 12:
12 goes into 80 6 times with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 5403767.4166
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.

After the division, we end up with 5403767.4166 and a remainder of 8e-05.