392578 divided by 43 
The aim is to understand the frequency of 43 in 392578.

Going ahead to step 1:
When dividing 3 by 43, we get 0 with 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.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 43

Going ahead to step 2:
The number 43 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Include the next digit (2) from the dividend after 39, then repeat: 392 / 43

Step 3:
392 divided by 43 is 9 with a remainder of 5.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 387 from 392 to get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 43

Let's proceed to step 4:
55 divided by 43 is 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 91.0
Subtract 43 from 55 to get 12.
Include the next digit (7) from the dividend after 12, then repeat: 127 / 43

Let's proceed to step 5:
The number 43 fits into 127 2 times, leaving a remainder of 41.
Write down 2 as next digit of the result. 
Result so far: 912.0
Deduct 86 from 127 and we're left with 41.
Grab the next digit (8) from the dividend, add it to 41, then carry on: 418 / 43

Advancing to step 6:
418 divided by 43 is 9 with a remainder of 31.
The next digit of our result is 9. 
Result so far: 9129.0
If we subtract 387 from 418, 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:
43 goes into 310 7 times with a remainder of 9.
The next digit of our result is 7. 
Result so far: 9129.7
Deduct 301 from 310 and we're left 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:
When dividing 90 by 43, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 9129.72
If we subtract 86 from 90, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
40 divided by 43 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 9129.72
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.

On to step 10:
400 divided by 43 is 9 with a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 9129.7209
If we subtract 387 from 400, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 11:
43 can be fit into 130 3 times, resulting in a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 9129.72093
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.

Advancing to step 12:
43 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 9129.72093
Deduct 0 from 10 and we're left 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.

On to step 13:
100 divided by 43 is 2 with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 9129.7209302
Deduct 86 from 100 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 14:
When dividing 140 by 43, we get 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 9129.72093023
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.

After the division, we end up with 9129.72093023 and a remainder of 1.1e-08.