We're dividing 591007 by 43 
The aim is to understand the frequency of 43 in 591007.

Advancing 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
If we take 0 away from 5, we end up with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 43

Step 2:
59 divided by 43 is 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
If we take 43 away from 59, we end up with 16.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 43

Step 3:
43 goes into 161 3 times with a remainder of 32.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 129 away from 161, we end up with 32.
Fetch the next digit (0) from the dividend, attach it to 32 and continue: 320 / 43

On to step 4:
If we divide 320 by 43, we get 7 and a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 137.0
Subtract 301 from 320 to get 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 43

Step 5:
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: 1374.0
Deduct 172 from 190 and we're left with 18.
Bring next digit (7) of the dividend behind the 18 and repeat the process: 187 / 43

Let's proceed to step 6:
43 goes into 187 4 times with a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 13744.0
Subtracting 172 from 187 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
When dividing 150 by 43, we get 3 with a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 13744.3
If we take 129 away from 150, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 8:
210 divided by 43 is 4 with a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 13744.34
Subtract 172 from 210 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
The number 43 fits into 380 8 times, leaving a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 13744.348
The remainder is 36 after subtracting 344 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 10:
If we divide 360 by 43, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 13744.3488
Deduct 344 from 360 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 13744.3488, with a leftover of 0.00016.