We look at the division of 251852 by 43 
The aim is to understand the frequency of 43 in 251852.

Step 1:
2 divided by 43 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 43

Moving on to step 2:
43 goes into 25 0 times with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 43

Going ahead to step 3:
When dividing 251 by 43, we get 5 with a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 215 away from 251, we end up with 36.
Grab the next digit (8) from the dividend, add it to 36, then carry on: 368 / 43

Moving on to step 4:
368 divided by 43 is 8 with a remainder of 24.
The next digit of our result is 8. 
Result so far: 58.0
Subtracting 344 from 368 leaves us with 24.
Take the next digit (5) from the dividend and append it to 24, then repeat: 245 / 43

Let's proceed to step 5:
If we divide 245 by 43, we get 5 and a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 585.0
Subtracting 215 from 245 leaves us with 30.
Fetch the next digit (2) from the dividend, attach it to 30 and continue: 302 / 43

Let's proceed to step 6:
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: 5857.0
Deduct 301 from 302 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
43 can be fit into 10 0 times, resulting in a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 5857.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
43 goes into 100 2 times with a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 5857.02
Subtract 86 from 100 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 9:
When dividing 140 by 43, we get 3 with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 5857.023
Subtracting 129 from 140 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 10:
43 can be fit into 110 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 5857.0232
Subtracting 86 from 110 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 11:
43 goes into 240 5 times with a remainder of 25.
The next digit of our result is 5. 
Result so far: 5857.02325
Deduct 215 from 240 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 12:
If we divide 250 by 43, we get 5 and a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 5857.023255
The remainder is 35 after subtracting 215 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 5857.023255 with a remainder of 3.5e-06.