644093 divided by 43 
The aim is to understand the frequency of 43 in 644093.

Let's proceed to step 1:
43 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 43

Moving on to step 2:
43 goes into 64 1 times with a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 43 from 64 to get 21.
Fetch the next digit (4) from the dividend, attach it to 21 and continue: 214 / 43

Moving on to step 3:
43 goes into 214 4 times with a remainder of 42.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 172 from 214 leaves us with 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 43

On to step 4:
The number 43 fits into 420 9 times, leaving a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 149.0
Deduct 387 from 420 and we're left with 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 43

Let's proceed to step 5:
43 can be fit into 339 7 times, resulting in a remainder of 38.
The next digit of our result is 7. 
Result so far: 1497.0
The remainder is 38 after subtracting 301 from 339.
Include the next digit (3) from the dividend after 38, then repeat: 383 / 43

Going ahead to step 6:
If we divide 383 by 43, we get 8 and a remainder of 39.
The next digit of our result is 8. 
Result so far: 14978.0
Deduct 344 from 383 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 7:
390 divided by 43 is 9 with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 14978.9
Subtracting 387 from 390 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 8:
When dividing 30 by 43, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 14978.9
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 9:
43 can be fit into 300 6 times, resulting in a remainder of 42.
The next digit of our result is 6. 
Result so far: 14978.906
Deduct 258 from 300 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
420 divided by 43 is 9 with a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 14978.9069
Deduct 387 from 420 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 11:
When dividing 330 by 43, we get 7 with a remainder of 29.
The next digit of our result is 7. 
Result so far: 14978.90697
The remainder is 29 after subtracting 301 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 12:
290 divided by 43 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 14978.906976
Deduct 258 from 290 and we're left 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.

Moving on to step 13:
320 divided by 43 is 7 with a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 14978.9069767
Subtract 301 from 320 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 14:
43 goes into 190 4 times with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 14978.90697674
Subtract 172 from 190 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 14978.90697674 with a remainder of 1.8e-08.