We're dividing 977979 by 64 
The aim is to understand the frequency of 64 in 977979.

On to step 1:
If we divide 9 by 64, we get 0 and 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.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 64

On to step 2:
If we divide 97 by 64, we get 1 and a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 64 from 97 and we're left with 33.
Append the next digit (7) from the dividend to 33 and continue with: 337 / 64

Step 3:
The number 64 fits into 337 5 times, leaving a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtracting 320 from 337 leaves us with 17.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 64

Advancing to step 4:
179 divided by 64 is 2 with a remainder of 51.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
If we subtract 128 from 179, we get 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 64

Step 5:
The number 64 fits into 517 8 times, leaving a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 1528.0
Deduct 512 from 517 and we're left with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 64

Step 6:
When dividing 59 by 64, we get 0 with a remainder of 59.
Put 0 as the next digit of the answer. 
Result so far: 15280.0
Subtracting 0 from 59 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 7:
590 divided by 64 is 9 with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 15280.9
If we take 576 away from 590, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
If we divide 140 by 64, we get 2 and a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 15280.92
Subtract 128 from 140 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.

Going ahead to step 9:
64 goes into 120 1 times with a remainder of 56.
The number 1 becomes the next digit in our result. 
Result so far: 15280.921
If we take 64 away from 120, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 10:
The number 64 fits into 560 8 times, leaving a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 15280.9218
Subtract 512 from 560 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 11:
64 goes into 480 7 times with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 15280.92187
Subtracting 448 from 480 leaves us 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.

Going ahead to step 12:
64 can be fit into 320 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 15280.921875
If we subtract 320 from 320, 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.

Advancing to step 13:
If we divide 0 by 64, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 15280.921875
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.

Advancing to step 14:
The number 64 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 15280.921875
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.

The final result is 15280.921875 with a remainder of 0.0.