587584 divided by 43 
The aim is to understand the frequency of 43 in 587584.

Going ahead to step 1:
43 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 43

On to step 2:
58 divided by 43 is 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 43 from 58, we get 15.
Take the next digit (7) from the dividend and append it to 15, then repeat: 157 / 43

Let's proceed to step 3:
The number 43 fits into 157 3 times, leaving a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we take 129 away from 157, we end up with 28.
Include the next digit (5) from the dividend after 28, then repeat: 285 / 43

Going ahead to step 4:
When dividing 285 by 43, we get 6 with a remainder of 27.
The next digit of our result is 6. 
Result so far: 136.0
If we subtract 258 from 285, we get 27.
Fetch the next digit (8) from the dividend, attach it to 27 and continue: 278 / 43

Going ahead to step 5:
When dividing 278 by 43, we get 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 1366.0
The remainder is 20 after subtracting 258 from 278.
Append the next digit (4) from the dividend to 20 and continue with: 204 / 43

Going ahead to step 6:
204 divided by 43 is 4 with a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 13664.0
If we subtract 172 from 204, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
320 divided by 43 is 7 with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 13664.7
If we take 301 away from 320, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 8:
When dividing 190 by 43, we get 4 with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 13664.74
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.

On to step 9:
When dividing 180 by 43, we get 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 13664.744
If we take 172 away from 180, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 13664.744 and a remainder of 0.0008.