643644 ÷ 96 
We want to divide 643644 by 96.

Step 1:
The number 96 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.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 96

Moving on to step 2:
96 can be fit into 64 0 times, resulting in a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Append the next digit (3) from the dividend to 64 and continue with: 643 / 96

On to step 3:
The number 96 fits into 643 6 times, leaving a remainder of 67.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 576 from 643 and we're left with 67.
Bring next digit (6) of the dividend behind the 67 and repeat the process: 676 / 96

Step 4:
When dividing 676 by 96, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 67.0
Subtract 672 from 676 to get 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 96

Moving on to step 5:
44 divided by 96 is 0 with a remainder of 44.
The next digit of our result is 0. 
Result so far: 670.0
Deduct 0 from 44 and we're left with 44.
Grab the next digit (4) from the dividend, add it to 44, then carry on: 444 / 96

Advancing to step 6:
96 goes into 444 4 times with a remainder of 60.
The number 4 becomes the next digit in our result. 
Result so far: 6704.0
Subtract 384 from 444 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 7:
96 goes into 600 6 times with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 6704.6
If we subtract 576 from 600, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 8:
240 divided by 96 is 2 with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 6704.62
The remainder is 48 after subtracting 192 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
The number 96 fits into 480 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 6704.625
The remainder is 0 after subtracting 480 from 480.
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 10:
96 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6704.625
Subtract 0 from 0 to 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.

Step 11:
0 divided by 96 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 6704.625
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.

The final result is 6704.625 with a remainder of 0.0.