409580 ÷ 43 
The aim is to understand the frequency of 43 in 409580.

On to step 1:
The number 43 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 43

Advancing to step 2:
The number 43 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Include the next digit (9) from the dividend after 40, then repeat: 409 / 43

Step 3:
When dividing 409 by 43, we get 9 with a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 387 from 409, we get 22.
Bring next digit (5) of the dividend behind the 22 and repeat the process: 225 / 43

Step 4:
The number 43 fits into 225 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 95.0
Subtract 215 from 225 to get 10.
Fetch the next digit (8) from the dividend, attach it to 10 and continue: 108 / 43

Advancing to step 5:
43 goes into 108 2 times with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 952.0
If we take 86 away from 108, we end up with 22.
Include the next digit (0) from the dividend after 22, then repeat: 220 / 43

Going ahead to step 6:
When dividing 220 by 43, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 9525.0
The remainder is 5 after subtracting 215 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
The number 43 fits into 50 1 times, leaving a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 9525.1
Subtract 43 from 50 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 8:
When dividing 70 by 43, we get 1 with a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 9525.11
If we take 43 away from 70, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 9525.11, with a leftover of 0.027.