Let's divide 803880 by 43
The aim is to understand the frequency of 43 in 803880.

Moving on to step 1:
43 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 43

Step 2:
43 goes into 80 1 times with a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 37 after subtracting 43 from 80.
Grab the next digit (3) from the dividend, add it to 37, then carry on: 373 / 43

Advancing to step 3:
43 can be fit into 373 8 times, resulting in a remainder of 29.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
If we subtract 344 from 373, we get 29.
Take the next digit (8) from the dividend and append it to 29, then repeat: 298 / 43

Step 4:
43 goes into 298 6 times with a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 186.0
The remainder is 40 after subtracting 258 from 298.
Include the next digit (8) from the dividend after 40, then repeat: 408 / 43

On to step 5:
43 can be fit into 408 9 times, resulting in a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 1869.0
Subtract 387 from 408 to get 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 43

Moving on to step 6:
43 can be fit into 210 4 times, resulting in a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 18694.0
Deduct 172 from 210 and we're left with 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 7:
The number 43 fits into 380 8 times, leaving a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 18694.8
If we take 344 away from 380, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 8:
When dividing 360 by 43, we get 8 with a remainder of 16.
The next digit of our result is 8. 
Result so far: 18694.88
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.

After the division, we end up with 18694.88 and a remainder of 0.016.