We look at the division of 145344 by 43 
The aim is to understand the frequency of 43 in 145344.

Step 1:
If we divide 1 by 43, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 43

Going ahead to step 2:
The number 43 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 14, we end up with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 43

Let's proceed to step 3:
The number 43 fits into 145 3 times, leaving a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 129 from 145 to get 16.
Append the next digit (3) from the dividend to 16 and continue with: 163 / 43

On to step 4:
43 can be fit into 163 3 times, resulting in a remainder of 34.
The next digit of our result is 3. 
Result so far: 33.0
Subtract 129 from 163 to get 34.
Include the next digit (4) from the dividend after 34, then repeat: 344 / 43

Let's proceed to step 5:
43 goes into 344 8 times with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 338.0
Subtract 344 from 344 to get 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 43

Advancing to step 6:
43 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 3380.0
The remainder is 4 after subtracting 0 from 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
If we divide 40 by 43, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 3380.0
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
When dividing 400 by 43, we get 9 with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 3380.09
Subtracting 387 from 400 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 9:
If we divide 130 by 43, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 3380.093
Deduct 129 from 130 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.

Step 10:
The number 43 fits into 10 0 times, leaving a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 3380.093
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 11:
43 can be fit into 100 2 times, resulting in a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 3380.09302
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.

Let's proceed to step 12:
The number 43 fits into 140 3 times, leaving a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 3380.093023
Subtract 129 from 140 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 13:
43 goes into 110 2 times with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 3380.0930232
If we take 86 away from 110, we end up 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.

On to step 14:
240 divided by 43 is 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 3380.09302325
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.

The quotient of the division is 3380.09302325, and the remainder is 2.5e-08.