Let's divide 520358 by 43
The aim is to understand the frequency of 43 in 520358.

Going ahead to step 1:
When dividing 5 by 43, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 43

Step 2:
The number 43 fits into 52 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 43 away from 52, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 43

Advancing to step 3:
The number 43 fits into 90 2 times, leaving a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 86 from 90 and we're left with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 43

On to step 4:
43 can be fit into 43 1 times, resulting in a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
The remainder is 0 after subtracting 43 from 43.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 43

Let's proceed to step 5:
When dividing 5 by 43, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 1210.0
Subtract 0 from 5 to get 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 43

On to step 6:
The number 43 fits into 58 1 times, leaving a remainder of 15.
The next digit of our result is 1. 
Result so far: 12101.0
Deduct 43 from 58 and we're left 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.

Step 7:
43 can be fit into 150 3 times, resulting in a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 12101.3
The remainder is 21 after subtracting 129 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
43 goes into 210 4 times with a remainder of 38.
The next digit of our result is 4. 
Result so far: 12101.34
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.

Step 9:
380 divided by 43 is 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 12101.348
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.

Step 10:
43 goes into 360 8 times with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 12101.3488
If we subtract 344 from 360, we get 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 12101.3488, with a leftover of 0.00016.