643328 ÷ 44 
The aim is to understand the frequency of 44 in 643328.

Step 1:
When dividing 6 by 44, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 44

Let's proceed to step 2:
The number 44 fits into 64 1 times, leaving a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 20 after subtracting 44 from 64.
Append the next digit (3) from the dividend to 20 and continue with: 203 / 44

Step 3:
203 divided by 44 is 4 with a remainder of 27.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 176 from 203 leaves us with 27.
Append the next digit (3) from the dividend to 27 and continue with: 273 / 44

On to step 4:
The number 44 fits into 273 6 times, leaving a remainder of 9.
The next digit of our result is 6. 
Result so far: 146.0
Subtracting 264 from 273 leaves us with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 44

Going ahead to step 5:
When dividing 92 by 44, we get 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 1462.0
Subtract 88 from 92 to get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 44

Advancing to step 6:
The number 44 fits into 48 1 times, leaving a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 14621.0
Subtract 44 from 48 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
44 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 14621.0
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 8:
The number 44 fits into 400 9 times, leaving a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 14621.09
Deduct 396 from 400 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
If we divide 40 by 44, we get 0 and a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 14621.09
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
44 can be fit into 400 9 times, resulting in a remainder of 4.
The next digit of our result is 9. 
Result so far: 14621.0909
Subtracting 396 from 400 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 11:
If we divide 40 by 44, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 14621.0909
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
The number 44 fits into 400 9 times, leaving a remainder of 4.
The next digit of our result is 9. 
Result so far: 14621.090909
Subtract 396 from 400 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 13:
The number 44 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 14621.090909
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 14:
If we divide 400 by 44, we get 9 and a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 14621.09090909
The remainder is 4 after subtracting 396 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 14621.09090909 with a remainder of 4e-09.