We look at the division of 516596 by 43 
The aim is to understand the frequency of 43 in 516596.

Step 1:
When dividing 5 by 43, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 43

Advancing to step 2:
The number 43 fits into 51 1 times, leaving a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 43 from 51 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 43

Going ahead to step 3:
43 can be fit into 86 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 86 from 86, we get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 43

Moving on to step 4:
If we divide 5 by 43, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 43

Going ahead to step 5:
59 divided by 43 is 1 with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 1201.0
Subtract 43 from 59 to get 16.
Include the next digit (6) from the dividend after 16, then repeat: 166 / 43

Going ahead to step 6:
The number 43 fits into 166 3 times, leaving a remainder of 37.
The next digit of our result is 3. 
Result so far: 12013.0
Subtracting 129 from 166 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.

Going ahead to step 7:
370 divided by 43 is 8 with a remainder of 26.
The next digit of our result is 8. 
Result so far: 12013.8
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.

Advancing 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: 12013.86
Deduct 258 from 260 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
43 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 12013.86
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
43 can be fit into 200 4 times, resulting in a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 12013.8604
Subtract 172 from 200 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
280 divided by 43 is 6 with a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 12013.86046
The remainder is 22 after subtracting 258 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 12:
When dividing 220 by 43, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 12013.860465
Subtract 215 from 220 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
50 divided by 43 is 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 12013.8604651
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.

Going ahead to step 14:
When dividing 70 by 43, we get 1 with a remainder of 27.
The next digit of our result is 1. 
Result so far: 12013.86046511
The remainder is 27 after subtracting 43 from 70.
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 12013.86046511, and the remainder is 2.7e-08.