309646 ÷ 64 
We're looking to find how many times 64 goes into 309646.

Going ahead to step 1:
64 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 64

Let's proceed to step 2:
64 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Take the next digit (9) from the dividend and append it to 30, then repeat: 309 / 64

Let's proceed to step 3:
The number 64 fits into 309 4 times, leaving a remainder of 53.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 53 after subtracting 256 from 309.
Include the next digit (6) from the dividend after 53, then repeat: 536 / 64

Moving on to step 4:
64 can be fit into 536 8 times, resulting in a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
Deduct 512 from 536 and we're left with 24.
Append the next digit (4) from the dividend to 24 and continue with: 244 / 64

Going ahead to step 5:
If we divide 244 by 64, we get 3 and a remainder of 52.
Use 3 as the next digit of our solution. 
Result so far: 483.0
The remainder is 52 after subtracting 192 from 244.
Bring next digit (6) of the dividend behind the 52 and repeat the process: 526 / 64

Let's proceed to step 6:
If we divide 526 by 64, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 4838.0
If we subtract 512 from 526, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
The number 64 fits into 140 2 times, leaving a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 4838.2
Deduct 128 from 140 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
When dividing 120 by 64, we get 1 with a remainder of 56.
Use 1 as the next digit of our solution. 
Result so far: 4838.21
If we subtract 64 from 120, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 9:
64 can be fit into 560 8 times, resulting in a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 4838.218
Subtract 512 from 560 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
If we divide 480 by 64, we get 7 and a remainder of 32.
The next digit of our result is 7. 
Result so far: 4838.2187
Subtracting 448 from 480 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 11:
If we divide 320 by 64, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 4838.21875
The remainder is 0 after subtracting 320 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
When dividing 0 by 64, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4838.21875
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 13:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4838.21875
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 4838.21875, and the remainder is 0.0.