We're dividing 620397 by 64 
The aim is to understand the frequency of 64 in 620397.

Moving on to step 1:
If we divide 6 by 64, we get 0 and 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.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 64

Let's proceed to step 2:
The number 64 fits into 62 0 times, leaving a remainder of 62.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 62, we get 62.
Append the next digit (0) from the dividend to 62 and continue with: 620 / 64

On to step 3:
When dividing 620 by 64, we get 9 with a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 9.0
The remainder is 44 after subtracting 576 from 620.
Include the next digit (3) from the dividend after 44, then repeat: 443 / 64

Advancing to step 4:
443 divided by 64 is 6 with a remainder of 59.
Use 6 as the next digit of our solution. 
Result so far: 96.0
Deduct 384 from 443 and we're left with 59.
Fetch the next digit (9) from the dividend, attach it to 59 and continue: 599 / 64

Let's proceed to step 5:
When dividing 599 by 64, we get 9 with a remainder of 23.
The number 9 becomes the next digit in our result. 
Result so far: 969.0
If we subtract 576 from 599, we get 23.
Fetch the next digit (7) from the dividend, attach it to 23 and continue: 237 / 64

Let's proceed to step 6:
64 can be fit into 237 3 times, resulting in a remainder of 45.
Record the quotient 3 as the next digit in the result. 
Result so far: 9693.0
If we take 192 away from 237, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 7:
450 divided by 64 is 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 9693.7
Subtracting 448 from 450 leaves us 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.

Moving on to step 8:
The number 64 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 9693.7
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
200 divided by 64 is 3 with a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 9693.703
Subtracting 192 from 200 leaves us 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.

On to step 10:
When dividing 80 by 64, we get 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 9693.7031
Subtract 64 from 80 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 11:
If we divide 160 by 64, we get 2 and a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 9693.70312
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.

Moving on to step 12:
64 can be fit into 320 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 9693.703125
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.

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: 9693.703125
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.

Moving on to step 14:
64 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 9693.703125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 9693.703125 with a remaining 0.0.