689431 divided by 43 
The aim is to understand the frequency of 43 in 689431.

Going ahead to step 1:
43 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 43

On to step 2:
43 can be fit into 68 1 times, resulting in a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 43 from 68 to get 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 43

Let's proceed to step 3:
The number 43 fits into 259 6 times, leaving a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtract 258 from 259 to get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 43

Advancing to step 4:
The number 43 fits into 14 0 times, leaving a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 160.0
Deduct 0 from 14 and we're left with 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 43

Moving on to step 5:
If we divide 143 by 43, we get 3 and a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 1603.0
If we take 129 away from 143, we end up with 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 43

Moving on to step 6:
43 can be fit into 141 3 times, resulting in a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 16033.0
If we take 129 away from 141, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
If we divide 120 by 43, we get 2 and a remainder of 34.
Use 2 as the next digit of our solution. 
Result so far: 16033.2
Subtracting 86 from 120 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 8:
If we divide 340 by 43, we get 7 and a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 16033.27
Subtracting 301 from 340 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 9:
43 goes into 390 9 times with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 16033.279
If we subtract 387 from 390, 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 10:
43 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 16033.279
Subtract 0 from 30 to 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 11:
The number 43 fits into 300 6 times, leaving a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 16033.27906
If we subtract 258 from 300, we 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.

Going ahead to step 12:
The number 43 fits into 420 9 times, leaving a remainder of 33.
Use 9 as the next digit of our solution. 
Result so far: 16033.279069
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 13:
The number 43 fits into 330 7 times, leaving a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 16033.2790697
If we take 301 away from 330, we end up 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.

Going ahead to step 14:
43 can be fit into 290 6 times, resulting in a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 16033.27906976
Subtract 258 from 290 to 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.

In conclusion, the division gives 16033.27906976 with a balance of 3.2e-08.