387800 ÷ 43 
The aim is to understand the frequency of 43 in 387800.

On to step 1:
3 divided by 43 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 43

Let's proceed to step 2:
If we divide 38 by 43, we get 0 and a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Include the next digit (7) from the dividend after 38, then repeat: 387 / 43

Let's proceed to step 3:
387 divided by 43 is 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtracting 387 from 387 leaves us with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 43

Advancing to step 4:
The number 43 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 90.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 43

Step 5:
80 divided by 43 is 1 with a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 901.0
If we take 43 away from 80, we end up with 37.
Bring next digit (0) of the dividend behind the 37 and repeat the process: 370 / 43

On to step 6:
The number 43 fits into 370 8 times, leaving a remainder of 26.
Put 8 as the next digit of the answer. 
Result so far: 9018.0
Subtract 344 from 370 to get 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 7:
43 can be fit into 260 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 9018.6
Deduct 258 from 260 and we're left 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.

On to step 8:
If we divide 20 by 43, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 9018.6
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
If we divide 200 by 43, we get 4 and a remainder of 28.
The next digit of our result is 4. 
Result so far: 9018.604
If we take 172 away from 200, we end up 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 10:
If we divide 280 by 43, we get 6 and a remainder of 22.
The next digit of our result is 6. 
Result so far: 9018.6046
If we take 258 away from 280, we end up 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 11:
The number 43 fits into 220 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 9018.60465
Subtract 215 from 220 to get 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 12:
43 goes into 50 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 9018.604651
If we take 43 away from 50, we end up 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.

Step 13:
70 divided by 43 is 1 with a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 9018.6046511
Subtract 43 from 70 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

In conclusion, the division gives 9018.6046511 with a balance of 2.7e-07.