We look at the division of 159220 by 43 
The aim is to understand the frequency of 43 in 159220.

On to step 1:
1 divided by 43 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 43

Advancing to step 2:
When dividing 15 by 43, we get 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 43

Let's proceed to step 3:
The number 43 fits into 159 3 times, leaving a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 129 from 159, we get 30.
Append the next digit (2) from the dividend to 30 and continue with: 302 / 43

Moving on to step 4:
The number 43 fits into 302 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 37.0
Subtracting 301 from 302 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 43

Step 5:
43 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 370.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (0) from the dividend, attach it to 12 and continue: 120 / 43

Advancing to step 6:
If we divide 120 by 43, we get 2 and a remainder of 34.
Use 2 as the next digit of our solution. 
Result so far: 3702.0
Deduct 86 from 120 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 7:
The number 43 fits into 340 7 times, leaving a remainder of 39.
Write down 7 as next digit of the result. 
Result so far: 3702.7
The remainder is 39 after subtracting 301 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 8:
If we divide 390 by 43, we get 9 and a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 3702.79
The remainder is 3 after subtracting 387 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
43 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 3702.79
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
If we divide 300 by 43, we get 6 and a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 3702.7906
Deduct 258 from 300 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 11:
43 goes into 420 9 times with a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 3702.79069
Subtract 387 from 420 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 12:
The number 43 fits into 330 7 times, leaving a remainder of 29.
The next digit of our result is 7. 
Result so far: 3702.790697
If we subtract 301 from 330, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 13:
The number 43 fits into 290 6 times, leaving a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 3702.7906976
Subtracting 258 from 290 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
When dividing 320 by 43, we get 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 3702.79069767
Deduct 301 from 320 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final result is 3702.79069767 with a remainder of 1.9e-08.