We're dividing 640129 by 64 
The aim is to understand the frequency of 64 in 640129.

On to step 1:
64 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 64

Advancing to step 2:
64 can be fit into 64 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 64 from 64 leaves us with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 64

Step 3:
64 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 0 and we're left with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 64

Going ahead to step 4:
When dividing 1 by 64, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 100.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 64

Step 5:
64 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 1000.0
If we take 0 away from 12, we end up with 12.
Grab the next digit (9) from the dividend, add it to 12, then carry on: 129 / 64

Going ahead to step 6:
64 goes into 129 2 times with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 10002.0
Deduct 128 from 129 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
64 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 10002.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
When dividing 100 by 64, we get 1 with a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 10002.01
Subtract 64 from 100 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
The number 64 fits into 360 5 times, leaving a remainder of 40.
The next digit of our result is 5. 
Result so far: 10002.015
The remainder is 40 after subtracting 320 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
64 goes into 400 6 times with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 10002.0156
If we take 384 away from 400, we end up 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.

Let's proceed to step 11:
When dividing 160 by 64, we get 2 with a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 10002.01562
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.

Advancing to step 12:
320 divided by 64 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 10002.015625
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.

Going ahead to step 13:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10002.015625
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.

Let's proceed to step 14:
When dividing 0 by 64, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10002.015625
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.

The quotient of the division is 10002.015625, and the remainder is 0.0.