642912 ÷ 43 
The aim is to understand the frequency of 43 in 642912.

On to step 1:
The number 43 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 43

Moving on to step 2:
If we divide 64 by 43, we get 1 and a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 43 from 64 to get 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 43

Going ahead to step 3:
212 divided by 43 is 4 with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 172 from 212 leaves us with 40.
Fetch the next digit (9) from the dividend, attach it to 40 and continue: 409 / 43

Advancing to step 4:
If we divide 409 by 43, we get 9 and a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 149.0
The remainder is 22 after subtracting 387 from 409.
Include the next digit (1) from the dividend after 22, then repeat: 221 / 43

On to step 5:
43 goes into 221 5 times with a remainder of 6.
Write down 5 as next digit of the result. 
Result so far: 1495.0
If we take 215 away from 221, we end up with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 43

On to step 6:
62 divided by 43 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 14951.0
If we subtract 43 from 62, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
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: 14951.4
The remainder is 18 after subtracting 172 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
The number 43 fits into 180 4 times, leaving a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 14951.44
Deduct 172 from 180 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 14951.44 with a remainder of 0.008.