We're dividing 10880272 by 648 
The aim is to understand the frequency of 648 in 10880272.

Step 1:
When dividing 1 by 648, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 648

On to step 2:
If we divide 10 by 648, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 10 and we're left with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 648

On to step 3:
When dividing 108 by 648, we get 0 with a remainder of 108.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 108 and we're left with 108.
Grab the next digit (8) from the dividend, add it to 108, then carry on: 1088 / 648

Advancing to step 4:
The number 648 fits into 1088 1 times, leaving a remainder of 440.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 648 from 1088 leaves us with 440.
Include the next digit (0) from the dividend after 440, then repeat: 4400 / 648

Going ahead to step 5:
When dividing 4400 by 648, we get 6 with a remainder of 512.
The next digit of our result is 6. 
Result so far: 16.0
Deduct 3888 from 4400 and we're left with 512.
Take the next digit (2) from the dividend and append it to 512, then repeat: 5122 / 648

Moving on to step 6:
648 can be fit into 5122 7 times, resulting in a remainder of 586.
Record the quotient 7 as the next digit in the result. 
Result so far: 167.0
Subtracting 4536 from 5122 leaves us with 586.
Grab the next digit (7) from the dividend, add it to 586, then carry on: 5867 / 648

Step 7:
648 goes into 5867 9 times with a remainder of 35.
Use 9 as the next digit of our solution. 
Result so far: 1679.0
Deduct 5832 from 5867 and we're left with 35.
Include the next digit (2) from the dividend after 35, then repeat: 352 / 648

Moving on to step 8:
When dividing 352 by 648, we get 0 with a remainder of 352.
Put 0 as the next digit of the answer. 
Result so far: 16790.0
Subtracting 0 from 352 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Going ahead to step 9:
If we divide 3520 by 648, we get 5 and a remainder of 280.
Write down 5 as next digit of the result. 
Result so far: 16790.5
Subtract 3240 from 3520 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 10:
When dividing 2800 by 648, we get 4 with a remainder of 208.
Put 4 as the next digit of the answer. 
Result so far: 16790.54
If we take 2592 away from 2800, we end up with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Let's proceed to step 11:
When dividing 2080 by 648, we get 3 with a remainder of 136.
Record the quotient 3 as the next digit in the result. 
Result so far: 16790.543
Deduct 1944 from 2080 and we're left with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 12:
1360 divided by 648 is 2 with a remainder of 64.
Write down 2 as next digit of the result. 
Result so far: 16790.5432
Subtract 1296 from 1360 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 13:
648 goes into 640 0 times with a remainder of 640.
Record the quotient 0 as the next digit in the result. 
Result so far: 16790.5432
Subtract 0 from 640 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 14:
648 goes into 6400 9 times with a remainder of 568.
Put 9 as the next digit of the answer. 
Result so far: 16790.543209
The remainder is 568 after subtracting 5832 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Advancing to step 15:
5680 divided by 648 is 8 with a remainder of 496.
The next digit of our result is 8. 
Result so far: 16790.5432098
The remainder is 496 after subtracting 5184 from 5680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Let's proceed to step 16:
648 goes into 4960 7 times with a remainder of 424.
The next digit of our result is 7. 
Result so far: 16790.54320987
Deduct 4536 from 4960 and we're left with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

After the division, we end up with 16790.54320987 and a remainder of 4.24e-07.