We look at the division of 149820 by 43 
The aim is to understand the frequency of 43 in 149820.

On to step 1:
When dividing 1 by 43, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 43

Advancing to step 2:
The number 43 fits into 14 0 times, leaving a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 14 leaves us with 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 43

Let's proceed to step 3:
43 can be fit into 149 3 times, resulting in a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 129 from 149 leaves us with 20.
Grab the next digit (8) from the dividend, add it to 20, then carry on: 208 / 43

Going ahead to step 4:
43 goes into 208 4 times with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Subtracting 172 from 208 leaves us with 36.
Fetch the next digit (2) from the dividend, attach it to 36 and continue: 362 / 43

Step 5:
43 can be fit into 362 8 times, resulting in a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 348.0
Deduct 344 from 362 and we're left with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 43

On to step 6:
If we divide 180 by 43, we get 4 and a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 3484.0
Subtract 172 from 180 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
When dividing 80 by 43, we get 1 with a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 3484.1
If we subtract 43 from 80, we get 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 8:
If we divide 370 by 43, we get 8 and a remainder of 26.
Write down 8 as next digit of the result. 
Result so far: 3484.18
Subtracting 344 from 370 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 9:
43 goes into 260 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 3484.186
Subtracting 258 from 260 leaves us 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.

Step 10:
43 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 3484.186
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
If we divide 200 by 43, we get 4 and a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 3484.18604
Subtracting 172 from 200 leaves us with 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 12:
The number 43 fits into 280 6 times, leaving a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 3484.186046
Deduct 258 from 280 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
The number 43 fits into 220 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 3484.1860465
If we take 215 away from 220, we end up 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.

Going ahead to step 14:
When dividing 50 by 43, we get 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 3484.18604651
Deduct 43 from 50 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 3484.18604651 with a balance of 7e-09.