65914963 ÷ 43 
The aim is to understand the frequency of 43 in 65914963.

On to step 1:
6 divided by 43 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 43

Step 2:
The number 43 fits into 65 1 times, leaving a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 43 from 65 leaves us with 22.
Bring next digit (9) of the dividend behind the 22 and repeat the process: 229 / 43

On to step 3:
If we divide 229 by 43, we get 5 and a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 215 away from 229, we end up with 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 43

Going ahead to step 4:
When dividing 141 by 43, we get 3 with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 153.0
Subtract 129 from 141 to get 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 43

On to step 5:
43 can be fit into 124 2 times, resulting in a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 1532.0
Subtracting 86 from 124 leaves us with 38.
Take the next digit (9) from the dividend and append it to 38, then repeat: 389 / 43

Going ahead to step 6:
If we divide 389 by 43, we get 9 and a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 15329.0
The remainder is 2 after subtracting 387 from 389.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 43

Moving on to step 7:
43 can be fit into 26 0 times, resulting in a remainder of 26.
The number 0 becomes the next digit in our result. 
Result so far: 153290.0
Deduct 0 from 26 and we're left with 26.
Take the next digit (3) from the dividend and append it to 26, then repeat: 263 / 43

Let's proceed to step 8:
The number 43 fits into 263 6 times, leaving a remainder of 5.
The number 6 becomes the next digit in our result. 
Result so far: 1532906.0
Deduct 258 from 263 and we're left 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.

Advancing to step 9:
43 goes into 50 1 times with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1532906.1
Subtracting 43 from 50 leaves us 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 10:
When dividing 70 by 43, we get 1 with a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 1532906.11
The remainder is 27 after subtracting 43 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 1532906.11, with a leftover of 0.027.