83241941 ÷ 648 
The aim is to understand the frequency of 648 in 83241941.

Moving on to step 1:
When dividing 8 by 648, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 648

On to step 2:
When dividing 83 by 648, we get 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Fetch the next digit (2) from the dividend, attach it to 83 and continue: 832 / 648

Going ahead to step 3:
648 goes into 832 1 times with a remainder of 184.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 648 from 832 leaves us with 184.
Append the next digit (4) from the dividend to 184 and continue with: 1844 / 648

Advancing to step 4:
The number 648 fits into 1844 2 times, leaving a remainder of 548.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 1296 away from 1844, we end up with 548.
Bring next digit (1) of the dividend behind the 548 and repeat the process: 5481 / 648

On to step 5:
648 can be fit into 5481 8 times, resulting in a remainder of 297.
The number 8 becomes the next digit in our result. 
Result so far: 128.0
Subtracting 5184 from 5481 leaves us with 297.
Take the next digit (9) from the dividend and append it to 297, then repeat: 2979 / 648

Moving on to step 6:
648 goes into 2979 4 times with a remainder of 387.
The next digit of our result is 4. 
Result so far: 1284.0
Subtract 2592 from 2979 to get 387.
Include the next digit (4) from the dividend after 387, then repeat: 3874 / 648

Moving on to step 7:
648 goes into 3874 5 times with a remainder of 634.
Use 5 as the next digit of our solution. 
Result so far: 12845.0
Deduct 3240 from 3874 and we're left with 634.
Grab the next digit (1) from the dividend, add it to 634, then carry on: 6341 / 648

On to step 8:
When dividing 6341 by 648, we get 9 with a remainder of 509.
Use 9 as the next digit of our solution. 
Result so far: 128459.0
Subtracting 5832 from 6341 leaves us with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Advancing to step 9:
648 goes into 5090 7 times with a remainder of 554.
Record the quotient 7 as the next digit in the result. 
Result so far: 128459.7
Subtracting 4536 from 5090 leaves us with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Advancing to step 10:
When dividing 5540 by 648, we get 8 with a remainder of 356.
Put 8 as the next digit of the answer. 
Result so far: 128459.78
The remainder is 356 after subtracting 5184 from 5540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Moving on to step 11:
648 can be fit into 3560 5 times, resulting in a remainder of 320.
Record the quotient 5 as the next digit in the result. 
Result so far: 128459.785
If we subtract 3240 from 3560, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 12:
The number 648 fits into 3200 4 times, leaving a remainder of 608.
Put 4 as the next digit of the answer. 
Result so far: 128459.7854
Subtracting 2592 from 3200 leaves us with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Let's proceed to step 13:
6080 divided by 648 is 9 with a remainder of 248.
Use 9 as the next digit of our solution. 
Result so far: 128459.78549
Subtracting 5832 from 6080 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 14:
648 can be fit into 2480 3 times, resulting in a remainder of 536.
Write down 3 as next digit of the result. 
Result so far: 128459.785493
If we take 1944 away from 2480, we end up with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Going ahead to step 15:
The number 648 fits into 5360 8 times, leaving a remainder of 176.
Write down 8 as next digit of the result. 
Result so far: 128459.7854938
Subtract 5184 from 5360 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 16:
648 can be fit into 1760 2 times, resulting in a remainder of 464.
Use 2 as the next digit of our solution. 
Result so far: 128459.78549382
If we take 1296 away from 1760, we end up with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Our division results in 128459.78549382 with a remaining 4.64e-07.