We divide 171910 by 43
The aim is to understand the frequency of 43 in 171910.

Step 1:
1 divided by 43 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 43

Going ahead to step 2:
When dividing 17 by 43, we get 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Take the next digit (1) from the dividend and append it to 17, then repeat: 171 / 43

Let's proceed to step 3:
171 divided by 43 is 3 with a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 129 from 171 to get 42.
Fetch the next digit (9) from the dividend, attach it to 42 and continue: 429 / 43

Step 4:
If we divide 429 by 43, we get 9 and a remainder of 42.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
The remainder is 42 after subtracting 387 from 429.
Append the next digit (1) from the dividend to 42 and continue with: 421 / 43

On to step 5:
43 goes into 421 9 times with a remainder of 34.
Put 9 as the next digit of the answer. 
Result so far: 399.0
The remainder is 34 after subtracting 387 from 421.
Append the next digit (0) from the dividend to 34 and continue with: 340 / 43

Let's proceed to step 6:
340 divided by 43 is 7 with a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 3997.0
Subtract 301 from 340 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
43 goes into 390 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 3997.9
If we subtract 387 from 390, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
43 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 3997.9
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 9:
43 goes into 300 6 times with a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 3997.906
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.

Going ahead to step 10:
43 can be fit into 420 9 times, resulting in a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 3997.9069
If we take 387 away from 420, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 11:
43 can be fit into 330 7 times, resulting in a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 3997.90697
The remainder is 29 after subtracting 301 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 12:
290 divided by 43 is 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 3997.906976
If we take 258 away from 290, we end up 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.

Moving on to step 13:
43 goes into 320 7 times with a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 3997.9069767
If we subtract 301 from 320, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 14:
When dividing 190 by 43, we get 4 with a remainder of 18.
Put 4 as the next digit of the answer. 
Result so far: 3997.90697674
The remainder is 18 after subtracting 172 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 3997.90697674 and a remainder of 1.8e-08.