Let's divide 399501 by 43
The aim is to understand the frequency of 43 in 399501.

Going ahead to step 1:
3 divided by 43 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 43

On to step 2:
The number 43 fits into 39 0 times, leaving a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Append the next digit (9) from the dividend to 39 and continue with: 399 / 43

Let's proceed to step 3:
When dividing 399 by 43, we get 9 with a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 387 from 399 to get 12.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 43

Step 4:
43 goes into 125 2 times with a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 92.0
The remainder is 39 after subtracting 86 from 125.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 43

Advancing to step 5:
390 divided by 43 is 9 with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 929.0
Subtracting 387 from 390 leaves us with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 43

Going ahead to step 6:
The number 43 fits into 31 0 times, leaving a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 9290.0
If we subtract 0 from 31, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
310 divided by 43 is 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 9290.7
If we take 301 away from 310, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 8:
43 goes into 90 2 times with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 9290.72
Deduct 86 from 90 and we're left with 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 9:
If we divide 40 by 43, we get 0 and a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 9290.72
The remainder is 40 after subtracting 0 from 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 10:
If we divide 400 by 43, we get 9 and a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 9290.7209
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.

On to step 11:
43 can be fit into 130 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 9290.72093
The remainder is 1 after subtracting 129 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 12:
10 divided by 43 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 9290.72093
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
When dividing 100 by 43, we get 2 with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 9290.7209302
The remainder is 14 after subtracting 86 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 14:
43 goes into 140 3 times with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 9290.72093023
If we subtract 129 from 140, we 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.

The quotient of the division is 9290.72093023, and the remainder is 1.1e-08.