We're dividing 831408 by 43 
The aim is to understand the frequency of 43 in 831408.

On to step 1:
If we divide 8 by 43, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 43

Going ahead to step 2:
If we divide 83 by 43, we get 1 and a remainder of 40.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 40 after subtracting 43 from 83.
Grab the next digit (1) from the dividend, add it to 40, then carry on: 401 / 43

On to step 3:
43 can be fit into 401 9 times, resulting in a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 387 from 401 and we're left with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 43

Let's proceed to step 4:
43 can be fit into 144 3 times, resulting in a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 193.0
The remainder is 15 after subtracting 129 from 144.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 43

Going ahead to step 5:
43 can be fit into 150 3 times, resulting in a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 1933.0
Subtracting 129 from 150 leaves us with 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 43

Step 6:
43 can be fit into 218 5 times, resulting in a remainder of 3.
The next digit of our result is 5. 
Result so far: 19335.0
If we subtract 215 from 218, 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.

Advancing to step 7:
43 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 19335.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
43 goes into 300 6 times with a remainder of 42.
Record the quotient 6 as the next digit in the result. 
Result so far: 19335.06
Subtract 258 from 300 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 9:
If we divide 420 by 43, we get 9 and a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 19335.069
Deduct 387 from 420 and we're left 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.

Advancing to step 10:
330 divided by 43 is 7 with a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 19335.0697
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 11:
43 goes into 290 6 times with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 19335.06976
If we subtract 258 from 290, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
320 divided by 43 is 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 19335.069767
Subtracting 301 from 320 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 13:
43 goes into 190 4 times with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 19335.0697674
Subtracting 172 from 190 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 14:
When dividing 180 by 43, we get 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 19335.06976744
If we subtract 172 from 180, we 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.

The final result is 19335.06976744 with a remainder of 8e-09.