643600 divided by 96 
The aim is to understand the frequency of 96 in 643600.

Let's proceed to step 1:
When dividing 6 by 96, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 96

Going ahead to step 2:
96 goes into 64 0 times with 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.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 96

Step 3:
The number 96 fits into 643 6 times, leaving a remainder of 67.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 67 after subtracting 576 from 643.
Include the next digit (6) from the dividend after 67, then repeat: 676 / 96

Let's proceed to step 4:
676 divided by 96 is 7 with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 67.0
Subtract 672 from 676 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 96

On to step 5:
40 divided by 96 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 670.0
Deduct 0 from 40 and we're left with 40.
Append the next digit (0) from the dividend to 40 and continue with: 400 / 96

Going ahead to step 6:
The number 96 fits into 400 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 6704.0
The remainder is 16 after subtracting 384 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
96 goes into 160 1 times with a remainder of 64.
The next digit of our result is 1. 
Result so far: 6704.1
Subtracting 96 from 160 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 8:
96 can be fit into 640 6 times, resulting in a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 6704.16
Deduct 576 from 640 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 9:
When dividing 640 by 96, we get 6 with a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 6704.166
If we take 576 away from 640, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 6704.166, with a leftover of 0.0064.