We look at the division of 807663 by 43 
The aim is to understand the frequency of 43 in 807663.

On to step 1:
When dividing 8 by 43, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 43

On to step 2:
80 divided by 43 is 1 with a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 43 from 80 leaves us with 37.
Include the next digit (7) from the dividend after 37, then repeat: 377 / 43

Moving on to step 3:
377 divided by 43 is 8 with a remainder of 33.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we subtract 344 from 377, we get 33.
Fetch the next digit (6) from the dividend, attach it to 33 and continue: 336 / 43

On to step 4:
The number 43 fits into 336 7 times, leaving a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 187.0
The remainder is 35 after subtracting 301 from 336.
Take the next digit (6) from the dividend and append it to 35, then repeat: 356 / 43

On to step 5:
356 divided by 43 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 1878.0
If we take 344 away from 356, we end up with 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 43

Going ahead to step 6:
If we divide 123 by 43, we get 2 and a remainder of 37.
The next digit of our result is 2. 
Result so far: 18782.0
Subtracting 86 from 123 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 7:
43 can be fit into 370 8 times, resulting in a remainder of 26.
Put 8 as the next digit of the answer. 
Result so far: 18782.8
Subtract 344 from 370 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 8:
43 can be fit into 260 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 18782.86
If we subtract 258 from 260, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
The number 43 fits into 20 0 times, leaving a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 18782.86
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
43 goes into 200 4 times with a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 18782.8604
Deduct 172 from 200 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 11:
43 can be fit into 280 6 times, resulting in a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 18782.86046
Deduct 258 from 280 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 12:
220 divided by 43 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 18782.860465
If we take 215 away from 220, we end up 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.

On to step 13:
43 goes into 50 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 18782.8604651
Deduct 43 from 50 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 14:
The number 43 fits into 70 1 times, leaving a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 18782.86046511
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.

The quotient of the division is 18782.86046511, and the remainder is 2.7e-08.