843789 ÷ 43 
The aim is to understand the frequency of 43 in 843789.

On to step 1:
If we divide 8 by 43, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 43

Advancing to step 2:
43 can be fit into 84 1 times, resulting in a remainder of 41.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 43 away from 84, we end up with 41.
Fetch the next digit (3) from the dividend, attach it to 41 and continue: 413 / 43

On to step 3:
43 can be fit into 413 9 times, resulting in a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 387 from 413, we get 26.
Append the next digit (7) from the dividend to 26 and continue with: 267 / 43

On to step 4:
When dividing 267 by 43, we get 6 with a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 196.0
If we subtract 258 from 267, we get 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 43

Let's proceed to step 5:
When dividing 98 by 43, we get 2 with a remainder of 12.
The next digit of our result is 2. 
Result so far: 1962.0
Deduct 86 from 98 and we're left with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 43

Moving on to step 6:
The number 43 fits into 129 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 19623.0
Subtract 129 from 129 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
If we divide 0 by 43, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 19623.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
0 divided by 43 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 19623.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 19623.0, with a leftover of 0.0.