640015 ÷ 55 
The aim is to understand the frequency of 55 in 640015.

Step 1:
If we divide 6 by 55, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 55

Let's proceed to step 2:
64 divided by 55 is 1 with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 55 from 64, we get 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 55

Going ahead to step 3:
55 goes into 90 1 times with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we take 55 away from 90, we end up with 35.
Include the next digit (0) from the dividend after 35, then repeat: 350 / 55

Let's proceed to step 4:
The number 55 fits into 350 6 times, leaving a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 116.0
The remainder is 20 after subtracting 330 from 350.
Include the next digit (1) from the dividend after 20, then repeat: 201 / 55

Advancing to step 5:
When dividing 201 by 55, we get 3 with a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 1163.0
Subtracting 165 from 201 leaves us with 36.
Include the next digit (5) from the dividend after 36, then repeat: 365 / 55

Step 6:
55 goes into 365 6 times with a remainder of 35.
Use 6 as the next digit of our solution. 
Result so far: 11636.0
If we take 330 away from 365, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 7:
The number 55 fits into 350 6 times, leaving a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 11636.6
The remainder is 20 after subtracting 330 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
When dividing 200 by 55, we get 3 with a remainder of 35.
The number 3 becomes the next digit in our result. 
Result so far: 11636.63
If we subtract 165 from 200, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
When dividing 350 by 55, we get 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 11636.636
Subtract 330 from 350 to 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.

Let's proceed to step 10:
55 goes into 200 3 times with a remainder of 35.
The next digit of our result is 3. 
Result so far: 11636.6363
Subtract 165 from 200 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 11:
When dividing 350 by 55, we get 6 with a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 11636.63636
Subtract 330 from 350 to 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 12:
200 divided by 55 is 3 with a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 11636.636363
Deduct 165 from 200 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 13:
When dividing 350 by 55, we get 6 with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 11636.6363636
Subtracting 330 from 350 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.

Advancing to step 14:
200 divided by 55 is 3 with a remainder of 35.
Write down 3 as next digit of the result. 
Result so far: 11636.63636363
If we take 165 away from 200, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Our division results in 11636.63636363 with a remaining 3.5e-08.