We look at the division of 843786 by 43 
The aim is to understand the frequency of 43 in 843786.

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
If we take 0 away from 8, we end up with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 43

Step 2:
If we divide 84 by 43, we get 1 and a remainder of 41.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 43 away from 84, we end up with 41.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 43

On to step 3:
43 goes into 413 9 times with a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 387 from 413 leaves us with 26.
Bring next digit (7) of the dividend behind the 26 and repeat the process: 267 / 43

Going ahead to step 4:
43 goes into 267 6 times with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 196.0
If we subtract 258 from 267, we get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 43

Let's proceed to step 5:
98 divided by 43 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 1962.0
Subtracting 86 from 98 leaves us with 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 43

Step 6:
43 goes into 126 2 times with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 19622.0
Subtracting 86 from 126 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 7:
When dividing 400 by 43, we get 9 with a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 19622.9
Deduct 387 from 400 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 8:
If we divide 130 by 43, we get 3 and a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 19622.93
If we take 129 away from 130, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
The number 43 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 19622.93
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
43 can be fit into 100 2 times, resulting in a remainder of 14.
The next digit of our result is 2. 
Result so far: 19622.9302
If we take 86 away from 100, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 11:
The number 43 fits into 140 3 times, leaving a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 19622.93023
Subtract 129 from 140 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 12:
If we divide 110 by 43, we get 2 and a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 19622.930232
The remainder is 24 after subtracting 86 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 13:
The number 43 fits into 240 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 19622.9302325
The remainder is 25 after subtracting 215 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 14:
250 divided by 43 is 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 19622.93023255
The remainder is 35 after subtracting 215 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Our division results in 19622.93023255 with a remaining 3.5e-08.