We look at the division of 57049923 by 65 
The aim is to understand the frequency of 65 in 57049923.

On to step 1:
65 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 65

Advancing to step 2:
65 goes into 57 0 times with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Include the next digit (0) from the dividend after 57, then repeat: 570 / 65

Moving on to step 3:
If we divide 570 by 65, we get 8 and a remainder of 50.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 520 from 570 to get 50.
Bring next digit (4) of the dividend behind the 50 and repeat the process: 504 / 65

Let's proceed to step 4:
If we divide 504 by 65, we get 7 and a remainder of 49.
The next digit of our result is 7. 
Result so far: 87.0
Subtract 455 from 504 to get 49.
Fetch the next digit (9) from the dividend, attach it to 49 and continue: 499 / 65

Step 5:
65 can be fit into 499 7 times, resulting in a remainder of 44.
The number 7 becomes the next digit in our result. 
Result so far: 877.0
The remainder is 44 after subtracting 455 from 499.
Append the next digit (9) from the dividend to 44 and continue with: 449 / 65

Step 6:
The number 65 fits into 449 6 times, leaving a remainder of 59.
The number 6 becomes the next digit in our result. 
Result so far: 8776.0
If we take 390 away from 449, we end up with 59.
Append the next digit (2) from the dividend to 59 and continue with: 592 / 65

Step 7:
When dividing 592 by 65, we get 9 with a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 87769.0
Deduct 585 from 592 and we're left with 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 65

Moving on to step 8:
If we divide 73 by 65, we get 1 and a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 877691.0
The remainder is 8 after subtracting 65 from 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
The number 65 fits into 80 1 times, leaving a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 877691.1
Subtract 65 from 80 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 10:
150 divided by 65 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 877691.12
Deduct 130 from 150 and we're left 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.

Going ahead to step 11:
65 can be fit into 200 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 877691.123
Deduct 195 from 200 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.

Step 12:
When dividing 50 by 65, we get 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 877691.123
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 13:
The number 65 fits into 500 7 times, leaving a remainder of 45.
The next digit of our result is 7. 
Result so far: 877691.12307
Subtract 455 from 500 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 14:
The number 65 fits into 450 6 times, leaving a remainder of 60.
The next digit of our result is 6. 
Result so far: 877691.123076
Subtracting 390 from 450 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 15:
The number 65 fits into 600 9 times, leaving a remainder of 15.
Put 9 as the next digit of the answer. 
Result so far: 877691.1230769
Subtracting 585 from 600 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 16:
The number 65 fits into 150 2 times, leaving a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 877691.12307692
Deduct 130 from 150 and we're left 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.

After the division, we end up with 877691.12307692 and a remainder of 2e-08.