64906950 ÷ 648 
The aim is to understand the frequency of 648 in 64906950.

Advancing to step 1:
The number 648 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 648

Step 2:
648 can be fit into 64 0 times, resulting in a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Take the next digit (9) from the dividend and append it to 64, then repeat: 649 / 648

Advancing to step 3:
When dividing 649 by 648, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 648 away from 649, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 648

Moving on to step 4:
The number 648 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 10, we get 10.
Take the next digit (6) from the dividend and append it to 10, then repeat: 106 / 648

On to step 5:
The number 648 fits into 106 0 times, leaving a remainder of 106.
Put 0 as the next digit of the answer. 
Result so far: 100.0
If we subtract 0 from 106, we get 106.
Include the next digit (9) from the dividend after 106, then repeat: 1069 / 648

On to step 6:
1069 divided by 648 is 1 with a remainder of 421.
Record the quotient 1 as the next digit in the result. 
Result so far: 1001.0
The remainder is 421 after subtracting 648 from 1069.
Fetch the next digit (5) from the dividend, attach it to 421 and continue: 4215 / 648

Going ahead to step 7:
648 can be fit into 4215 6 times, resulting in a remainder of 327.
Write down 6 as next digit of the result. 
Result so far: 10016.0
Subtract 3888 from 4215 to get 327.
Append the next digit (0) from the dividend to 327 and continue with: 3270 / 648

Moving on to step 8:
The number 648 fits into 3270 5 times, leaving a remainder of 30.
The next digit of our result is 5. 
Result so far: 100165.0
Subtracting 3240 from 3270 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
When dividing 300 by 648, we get 0 with a remainder of 300.
Use 0 as the next digit of our solution. 
Result so far: 100165.0
The remainder is 300 after subtracting 0 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 10:
The number 648 fits into 3000 4 times, leaving a remainder of 408.
Use 4 as the next digit of our solution. 
Result so far: 100165.04
If we subtract 2592 from 3000, we get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Advancing to step 11:
648 goes into 4080 6 times with a remainder of 192.
Put 6 as the next digit of the answer. 
Result so far: 100165.046
The remainder is 192 after subtracting 3888 from 4080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 12:
1920 divided by 648 is 2 with a remainder of 624.
Use 2 as the next digit of our solution. 
Result so far: 100165.0462
If we take 1296 away from 1920, we end up with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Step 13:
When dividing 6240 by 648, we get 9 with a remainder of 408.
Write down 9 as next digit of the result. 
Result so far: 100165.04629
Subtracting 5832 from 6240 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Advancing to step 14:
The number 648 fits into 4080 6 times, leaving a remainder of 192.
Write down 6 as next digit of the result. 
Result so far: 100165.046296
If we take 3888 away from 4080, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 15:
648 goes into 1920 2 times with a remainder of 624.
The number 2 becomes the next digit in our result. 
Result so far: 100165.0462962
Deduct 1296 from 1920 and we're left with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Let's proceed to step 16:
When dividing 6240 by 648, we get 9 with a remainder of 408.
Write down 9 as next digit of the result. 
Result so far: 100165.04629629
If we subtract 5832 from 6240, we get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Our division results in 100165.04629629 with a remaining 4.08e-07.