We're dividing 343186 by 43 
The aim is to understand the frequency of 43 in 343186.

Step 1:
The number 43 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 43

Moving on to step 2:
When dividing 34 by 43, we get 0 with a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Fetch the next digit (3) from the dividend, attach it to 34 and continue: 343 / 43

Step 3:
343 divided by 43 is 7 with a remainder of 42.
The next digit of our result is 7. 
Result so far: 7.0
If we take 301 away from 343, we end up with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 43

Advancing to step 4:
43 goes into 421 9 times with a remainder of 34.
Use 9 as the next digit of our solution. 
Result so far: 79.0
If we take 387 away from 421, we end up with 34.
Grab the next digit (8) from the dividend, add it to 34, then carry on: 348 / 43

Step 5:
When dividing 348 by 43, we get 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 798.0
If we subtract 344 from 348, we get 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 43

Moving on to step 6:
The number 43 fits into 46 1 times, leaving a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 7981.0
If we take 43 away from 46, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
When dividing 30 by 43, we get 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 7981.0
Subtracting 0 from 30 leaves us with 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:
300 divided by 43 is 6 with a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 7981.06
The remainder is 42 after subtracting 258 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 9:
43 can be fit into 420 9 times, resulting in a remainder of 33.
The next digit of our result is 9. 
Result so far: 7981.069
If we subtract 387 from 420, we get 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:
When dividing 330 by 43, we get 7 with a remainder of 29.
Write down 7 as next digit of the result. 
Result so far: 7981.0697
Deduct 301 from 330 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 11:
290 divided by 43 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 7981.06976
The remainder is 32 after subtracting 258 from 290.
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:
When dividing 320 by 43, we get 7 with a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 7981.069767
If we subtract 301 from 320, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 13:
If we divide 190 by 43, we get 4 and a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 7981.0697674
If we subtract 172 from 190, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 14:
43 goes into 180 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 7981.06976744
If we take 172 away from 180, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 7981.06976744 with a remaining 8e-09.