63854603 ÷ 64 
The aim is to understand the frequency of 64 in 63854603.

Let's proceed to step 1:
64 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
The remainder is 6 after subtracting 0 from 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 64

Going ahead to step 2:
63 divided by 64 is 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 64

On to step 3:
If we divide 638 by 64, we get 9 and a remainder of 62.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we take 576 away from 638, we end up with 62.
Include the next digit (5) from the dividend after 62, then repeat: 625 / 64

Moving on to step 4:
If we divide 625 by 64, we get 9 and a remainder of 49.
The next digit of our result is 9. 
Result so far: 99.0
Subtracting 576 from 625 leaves us with 49.
Bring next digit (4) of the dividend behind the 49 and repeat the process: 494 / 64

Advancing to step 5:
64 can be fit into 494 7 times, resulting in a remainder of 46.
Write down 7 as next digit of the result. 
Result so far: 997.0
The remainder is 46 after subtracting 448 from 494.
Include the next digit (6) from the dividend after 46, then repeat: 466 / 64

Advancing to step 6:
The number 64 fits into 466 7 times, leaving a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 9977.0
If we subtract 448 from 466, we get 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 64

Step 7:
The number 64 fits into 180 2 times, leaving a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 99772.0
Deduct 128 from 180 and we're left with 52.
Append the next digit (3) from the dividend to 52 and continue with: 523 / 64

Moving on to step 8:
64 goes into 523 8 times with a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 997728.0
If we subtract 512 from 523, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
The number 64 fits into 110 1 times, leaving a remainder of 46.
Record the quotient 1 as the next digit in the result. 
Result so far: 997728.1
Deduct 64 from 110 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 10:
If we divide 460 by 64, we get 7 and a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 997728.17
Subtract 448 from 460 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 11:
When dividing 120 by 64, we get 1 with a remainder of 56.
Record the quotient 1 as the next digit in the result. 
Result so far: 997728.171
Subtract 64 from 120 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
The number 64 fits into 560 8 times, leaving a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 997728.1718
If we take 512 away from 560, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
When dividing 480 by 64, we get 7 with a remainder of 32.
Write down 7 as next digit of the result. 
Result so far: 997728.17187
The remainder is 32 after subtracting 448 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
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: 997728.171875
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.

Moving on to step 15:
When dividing 0 by 64, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 997728.171875
Subtract 0 from 0 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.

Going ahead to step 16:
If we divide 0 by 64, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 997728.171875
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.

The final result is 997728.171875 with a remainder of 0.0.