817641 ÷ 64 
The aim is to understand the frequency of 64 in 817641.

Advancing to step 1:
If we divide 8 by 64, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 64

Let's proceed to step 2:
64 can be fit into 81 1 times, resulting in a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 64 from 81 and we're left with 17.
Append the next digit (7) from the dividend to 17 and continue with: 177 / 64

On to step 3:
The number 64 fits into 177 2 times, leaving a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 128 from 177 and we're left with 49.
Fetch the next digit (6) from the dividend, attach it to 49 and continue: 496 / 64

Going ahead to step 4:
64 can be fit into 496 7 times, resulting in a remainder of 48.
Record the quotient 7 as the next digit in the result. 
Result so far: 127.0
Subtract 448 from 496 to get 48.
Bring next digit (4) of the dividend behind the 48 and repeat the process: 484 / 64

Advancing to step 5:
64 can be fit into 484 7 times, resulting in a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 1277.0
The remainder is 36 after subtracting 448 from 484.
Bring next digit (1) of the dividend behind the 36 and repeat the process: 361 / 64

Step 6:
64 goes into 361 5 times with a remainder of 41.
Write down 5 as next digit of the result. 
Result so far: 12775.0
Deduct 320 from 361 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 7:
The number 64 fits into 410 6 times, leaving a remainder of 26.
Put 6 as the next digit of the answer. 
Result so far: 12775.6
Subtract 384 from 410 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 8:
64 can be fit into 260 4 times, resulting in a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 12775.64
If we take 256 away from 260, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
The number 64 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 12775.64
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
If we divide 400 by 64, we get 6 and a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 12775.6406
Subtracting 384 from 400 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.

Moving on to step 11:
If we divide 160 by 64, we get 2 and a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 12775.64062
If we take 128 away from 160, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
When dividing 320 by 64, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 12775.640625
If we take 320 away from 320, we end up 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.

Going ahead to step 13:
0 divided by 64 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12775.640625
Deduct 0 from 0 and we're left 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.

Going ahead to step 14:
0 divided by 64 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12775.640625
If we take 0 away from 0, we end up 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.

After the division, we end up with 12775.640625 and a remainder of 0.0.