We look at the division of 12836 by 43 
The aim is to understand the frequency of 43 in 12836.

Moving on to step 1:
43 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 43

Going ahead to step 2:
When dividing 12 by 43, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 43

On to step 3:
128 divided by 43 is 2 with a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 86 from 128 leaves us with 42.
Grab the next digit (3) from the dividend, add it to 42, then carry on: 423 / 43

Going ahead to step 4:
43 can be fit into 423 9 times, resulting in a remainder of 36.
Write down 9 as next digit of the result. 
Result so far: 29.0
Subtracting 387 from 423 leaves us with 36.
Grab the next digit (6) from the dividend, add it to 36, then carry on: 366 / 43

Let's proceed to step 5:
If we divide 366 by 43, we get 8 and a remainder of 22.
The next digit of our result is 8. 
Result so far: 298.0
The remainder is 22 after subtracting 344 from 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 6:
The number 43 fits into 220 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 298.5
Subtracting 215 from 220 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
If we divide 50 by 43, we get 1 and a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 298.51
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:
43 goes into 70 1 times with a remainder of 27.
The next digit of our result is 1. 
Result so far: 298.511
Subtract 43 from 70 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Our division results in 298.511 with a remaining 0.0027.