We're dividing 615765 by 64 
The aim is to understand the frequency of 64 in 615765.

Going ahead to step 1:
When dividing 6 by 64, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 64

Advancing to step 2:
When dividing 61 by 64, we get 0 with a remainder of 61.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 61 leaves us with 61.
Include the next digit (5) from the dividend after 61, then repeat: 615 / 64

Advancing to step 3:
64 can be fit into 615 9 times, resulting in a remainder of 39.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 576 from 615 leaves us with 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 64

Going ahead to step 4:
If we divide 397 by 64, we get 6 and a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 96.0
Subtracting 384 from 397 leaves us with 13.
Grab the next digit (6) from the dividend, add it to 13, then carry on: 136 / 64

On to step 5:
When dividing 136 by 64, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 962.0
If we subtract 128 from 136, we get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 64

Advancing to step 6:
When dividing 85 by 64, we get 1 with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 9621.0
The remainder is 21 after subtracting 64 from 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
If we divide 210 by 64, we get 3 and a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 9621.3
Subtracting 192 from 210 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
64 goes into 180 2 times with a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 9621.32
If we take 128 away from 180, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 9:
64 can be fit into 520 8 times, resulting in a remainder of 8.
The next digit of our result is 8. 
Result so far: 9621.328
Deduct 512 from 520 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
When dividing 80 by 64, we get 1 with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 9621.3281
Subtracting 64 from 80 leaves us 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.

Step 11:
64 goes into 160 2 times with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 9621.32812
The remainder is 32 after subtracting 128 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 12:
64 can be fit into 320 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 9621.328125
The remainder is 0 after subtracting 320 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 13:
When dividing 0 by 64, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 9621.328125
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 14:
When dividing 0 by 64, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 9621.328125
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 9621.328125, and the remainder is 0.0.