900813 ÷ 64 
The aim is to understand the frequency of 64 in 900813.

Going ahead to step 1:
64 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 64

Let's proceed to step 2:
The number 64 fits into 90 1 times, leaving a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 64 from 90 and we're left with 26.
Append the next digit (0) from the dividend to 26 and continue with: 260 / 64

Going ahead to step 3:
The number 64 fits into 260 4 times, leaving a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 256 from 260 to get 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 64

Advancing to step 4:
The number 64 fits into 48 0 times, leaving a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 140.0
The remainder is 48 after subtracting 0 from 48.
Grab the next digit (1) from the dividend, add it to 48, then carry on: 481 / 64

Moving on to step 5:
64 goes into 481 7 times with a remainder of 33.
The next digit of our result is 7. 
Result so far: 1407.0
Subtract 448 from 481 to get 33.
Bring next digit (3) of the dividend behind the 33 and repeat the process: 333 / 64

Moving on to step 6:
The number 64 fits into 333 5 times, leaving a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 14075.0
Deduct 320 from 333 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
If we divide 130 by 64, we get 2 and a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 14075.2
Deduct 128 from 130 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
If we divide 20 by 64, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 14075.2
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
The number 64 fits into 200 3 times, leaving a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 14075.203
Subtract 192 from 200 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
80 divided by 64 is 1 with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 14075.2031
The remainder is 16 after subtracting 64 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
160 divided by 64 is 2 with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 14075.20312
Subtract 128 from 160 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
If we divide 320 by 64, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 14075.203125
Subtract 320 from 320 to 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.

Let's proceed to step 13:
0 divided by 64 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 14075.203125
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.

On to step 14:
If we divide 0 by 64, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 14075.203125
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.

After the division, we end up with 14075.203125 and a remainder of 0.0.