640136 ÷ 65 
The aim is to understand the frequency of 65 in 640136.

On to step 1:
If we divide 6 by 65, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 65

Moving on to step 2:
When dividing 64 by 65, we get 0 with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 65

Step 3:
640 divided by 65 is 9 with a remainder of 55.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 585 from 640 leaves us with 55.
Fetch the next digit (1) from the dividend, attach it to 55 and continue: 551 / 65

Advancing to step 4:
551 divided by 65 is 8 with a remainder of 31.
Use 8 as the next digit of our solution. 
Result so far: 98.0
If we subtract 520 from 551, we get 31.
Bring next digit (3) of the dividend behind the 31 and repeat the process: 313 / 65

Let's proceed to step 5:
The number 65 fits into 313 4 times, leaving a remainder of 53.
Record the quotient 4 as the next digit in the result. 
Result so far: 984.0
Deduct 260 from 313 and we're left with 53.
Grab the next digit (6) from the dividend, add it to 53, then carry on: 536 / 65

Step 6:
When dividing 536 by 65, we get 8 with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 9848.0
Deduct 520 from 536 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
The number 65 fits into 160 2 times, leaving a remainder of 30.
The number 2 becomes the next digit in our result. 
Result so far: 9848.2
If we subtract 130 from 160, we 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.

Step 8:
When dividing 300 by 65, we get 4 with a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 9848.24
The remainder is 40 after subtracting 260 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
65 goes into 400 6 times with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 9848.246
The remainder is 10 after subtracting 390 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
The number 65 fits into 100 1 times, leaving a remainder of 35.
The next digit of our result is 1. 
Result so far: 9848.2461
Subtract 65 from 100 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 11:
350 divided by 65 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 9848.24615
If we subtract 325 from 350, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 12:
If we divide 250 by 65, we get 3 and a remainder of 55.
Put 3 as the next digit of the answer. 
Result so far: 9848.246153
Deduct 195 from 250 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 13:
If we divide 550 by 65, we get 8 and a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 9848.2461538
Deduct 520 from 550 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 14:
300 divided by 65 is 4 with a remainder of 40.
The next digit of our result is 4. 
Result so far: 9848.24615384
The remainder is 40 after subtracting 260 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 9848.24615384, with a leftover of 4e-08.