Let's divide 640864 by 69
The aim is to understand the frequency of 69 in 640864.

Step 1:
69 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 69

Moving on to step 2:
64 divided by 69 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 69

Step 3:
69 goes into 640 9 times with a remainder of 19.
The next digit of our result is 9. 
Result so far: 9.0
If we take 621 away from 640, we end up with 19.
Include the next digit (8) from the dividend after 19, then repeat: 198 / 69

Let's proceed to step 4:
69 goes into 198 2 times with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 92.0
Subtract 138 from 198 to get 60.
Grab the next digit (6) from the dividend, add it to 60, then carry on: 606 / 69

Going ahead to step 5:
69 can be fit into 606 8 times, resulting in a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 928.0
Deduct 552 from 606 and we're left with 54.
Append the next digit (4) from the dividend to 54 and continue with: 544 / 69

On to step 6:
If we divide 544 by 69, we get 7 and a remainder of 61.
Record the quotient 7 as the next digit in the result. 
Result so far: 9287.0
Subtracting 483 from 544 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 7:
If we divide 610 by 69, we get 8 and a remainder of 58.
Use 8 as the next digit of our solution. 
Result so far: 9287.8
Subtract 552 from 610 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 8:
69 goes into 580 8 times with a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 9287.88
If we take 552 away from 580, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

In conclusion, the division gives 9287.88 with a balance of 0.028.