We divide 438490 by 43
The aim is to understand the frequency of 43 in 438490.

Going ahead to step 1:
43 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 43

Moving on to step 2:
43 can be fit into 43 1 times, resulting in a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 43 from 43, we get 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 43

Moving on to step 3:
The number 43 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 8, we get 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 43

Step 4:
84 divided by 43 is 1 with a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 101.0
The remainder is 41 after subtracting 43 from 84.
Bring next digit (9) of the dividend behind the 41 and repeat the process: 419 / 43

On to step 5:
If we divide 419 by 43, we get 9 and a remainder of 32.
The next digit of our result is 9. 
Result so far: 1019.0
If we take 387 away from 419, we end up with 32.
Fetch the next digit (0) from the dividend, attach it to 32 and continue: 320 / 43

Going ahead to step 6:
The number 43 fits into 320 7 times, leaving a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 10197.0
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.

Let's proceed to step 7:
43 can be fit into 190 4 times, resulting in a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 10197.4
The remainder is 18 after subtracting 172 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
43 can be fit into 180 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 10197.44
Subtract 172 from 180 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 10197.44, with a leftover of 0.008.