We divide 66405608 by 309
Let's see how many times 309 fits into 66405608.

Moving on to step 1:
The number 309 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 309

On to step 2:
309 can be fit into 66 0 times, resulting in a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Take the next digit (4) from the dividend and append it to 66, then repeat: 664 / 309

Let's proceed to step 3:
309 goes into 664 2 times with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 618 from 664 to get 46.
Take the next digit (0) from the dividend and append it to 46, then repeat: 460 / 309

On to step 4:
When dividing 460 by 309, we get 1 with a remainder of 151.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtracting 309 from 460 leaves us with 151.
Include the next digit (5) from the dividend after 151, then repeat: 1515 / 309

Let's proceed to step 5:
If we divide 1515 by 309, we get 4 and a remainder of 279.
The next digit of our result is 4. 
Result so far: 214.0
Deduct 1236 from 1515 and we're left with 279.
Include the next digit (6) from the dividend after 279, then repeat: 2796 / 309

Advancing to step 6:
309 goes into 2796 9 times with a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 2149.0
If we subtract 2781 from 2796, we get 15.
Bring next digit (0) of the dividend behind the 15 and repeat the process: 150 / 309

On to step 7:
The number 309 fits into 150 0 times, leaving a remainder of 150.
Use 0 as the next digit of our solution. 
Result so far: 21490.0
If we take 0 away from 150, we end up with 150.
Take the next digit (8) from the dividend and append it to 150, then repeat: 1508 / 309

Step 8:
309 goes into 1508 4 times with a remainder of 272.
Record the quotient 4 as the next digit in the result. 
Result so far: 214904.0
Subtracting 1236 from 1508 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 9:
The number 309 fits into 2720 8 times, leaving a remainder of 248.
The number 8 becomes the next digit in our result. 
Result so far: 214904.8
Subtracting 2472 from 2720 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 10:
309 can be fit into 2480 8 times, resulting in a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 214904.88
Subtracting 2472 from 2480 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.

Our division results in 214904.88 with a remaining 0.008.