We look at the division of 667640 by 43 
The aim is to understand the frequency of 43 in 667640.

Moving on to step 1:
43 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 43

On to step 2:
66 divided by 43 is 1 with a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 43 from 66 leaves us with 23.
Append the next digit (7) from the dividend to 23 and continue with: 237 / 43

Moving on to step 3:
When dividing 237 by 43, we get 5 with a remainder of 22.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 22 after subtracting 215 from 237.
Include the next digit (6) from the dividend after 22, then repeat: 226 / 43

Going ahead to step 4:
If we divide 226 by 43, we get 5 and a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
If we take 215 away from 226, we end up with 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 43

On to step 5:
When dividing 114 by 43, we get 2 with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 1552.0
Deduct 86 from 114 and we're left with 28.
Grab the next digit (0) from the dividend, add it to 28, then carry on: 280 / 43

Advancing to step 6:
The number 43 fits into 280 6 times, leaving a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 15526.0
If we subtract 258 from 280, we get 22.
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 7:
If we divide 220 by 43, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 15526.5
Deduct 215 from 220 and we're left 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.

Moving on to step 8:
50 divided by 43 is 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 15526.51
The remainder is 7 after subtracting 43 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 9:
The number 43 fits into 70 1 times, leaving a remainder of 27.
The next digit of our result is 1. 
Result so far: 15526.511
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.

Our division results in 15526.511 with a remaining 0.0027.