We divide 644846 by 64
Let's see how many times 64 fits into 644846.

Going ahead to step 1:
The number 64 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 64

Advancing to step 2:
If we divide 64 by 64, we get 1 and a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 64 from 64 to get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 64

On to step 3:
4 divided by 64 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 64

On to step 4:
When dividing 48 by 64, we get 0 with a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 100.0
If we take 0 away from 48, we end up with 48.
Grab the next digit (4) from the dividend, add it to 48, then carry on: 484 / 64

Step 5:
64 can be fit into 484 7 times, resulting in a remainder of 36.
Use 7 as the next digit of our solution. 
Result so far: 1007.0
If we subtract 448 from 484, we get 36.
Include the next digit (6) from the dividend after 36, then repeat: 366 / 64

Step 6:
64 goes into 366 5 times with a remainder of 46.
The number 5 becomes the next digit in our result. 
Result so far: 10075.0
The remainder is 46 after subtracting 320 from 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 7:
The number 64 fits into 460 7 times, leaving a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 10075.7
Subtracting 448 from 460 leaves us 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:
64 can be fit into 120 1 times, resulting in a remainder of 56.
Use 1 as the next digit of our solution. 
Result so far: 10075.71
The remainder is 56 after subtracting 64 from 120.
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:
When dividing 560 by 64, we get 8 with a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 10075.718
If we take 512 away from 560, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 10:
64 can be fit into 480 7 times, resulting in a remainder of 32.
The next digit of our result is 7. 
Result so far: 10075.7187
Subtract 448 from 480 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 11:
The number 64 fits into 320 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 10075.71875
Deduct 320 from 320 and we're left 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.

Advancing to 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: 10075.71875
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 13:
If we divide 0 by 64, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 10075.71875
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 10075.71875 and a remainder of 0.0.