Let's divide 643712 by 43
The aim is to understand the frequency of 43 in 643712.

Moving on to step 1:
43 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 43

Moving on to step 2:
If we divide 64 by 43, we get 1 and a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 43 from 64 to get 21.
Fetch the next digit (3) from the dividend, attach it to 21 and continue: 213 / 43

Moving on to step 3:
43 can be fit into 213 4 times, resulting in a remainder of 41.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 41 after subtracting 172 from 213.
Include the next digit (7) from the dividend after 41, then repeat: 417 / 43

Going ahead to step 4:
43 goes into 417 9 times with a remainder of 30.
The next digit of our result is 9. 
Result so far: 149.0
Subtract 387 from 417 to get 30.
Include the next digit (1) from the dividend after 30, then repeat: 301 / 43

Advancing to step 5:
301 divided by 43 is 7 with a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 1497.0
Subtract 301 from 301 to get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 43

On to step 6:
The number 43 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 14970.0
Deduct 0 from 2 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 7:
When dividing 20 by 43, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 14970.0
If we take 0 away from 20, we end up 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.

Moving on to step 8:
43 can be fit into 200 4 times, resulting in a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 14970.04
The remainder is 28 after subtracting 172 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 9:
43 can be fit into 280 6 times, resulting in a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 14970.046
If we subtract 258 from 280, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 10:
When dividing 220 by 43, we get 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 14970.0465
If we take 215 away from 220, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
43 goes into 50 1 times with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 14970.04651
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.

Going ahead to step 12:
70 divided by 43 is 1 with a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 14970.046511
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 14970.046511 with a balance of 2.7e-06.