We're dividing 87287924 by 648 
The aim is to understand the frequency of 648 in 87287924.

Moving on to step 1:
648 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 648

Step 2:
The number 648 fits into 87 0 times, leaving a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Grab the next digit (2) from the dividend, add it to 87, then carry on: 872 / 648

Going ahead to step 3:
872 divided by 648 is 1 with a remainder of 224.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 648 from 872 leaves us with 224.
Fetch the next digit (8) from the dividend, attach it to 224 and continue: 2248 / 648

Going ahead to step 4:
If we divide 2248 by 648, we get 3 and a remainder of 304.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 1944 from 2248, we get 304.
Include the next digit (7) from the dividend after 304, then repeat: 3047 / 648

Going ahead to step 5:
648 can be fit into 3047 4 times, resulting in a remainder of 455.
Put 4 as the next digit of the answer. 
Result so far: 134.0
If we take 2592 away from 3047, we end up with 455.
Take the next digit (9) from the dividend and append it to 455, then repeat: 4559 / 648

Step 6:
When dividing 4559 by 648, we get 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 1347.0
Deduct 4536 from 4559 and we're left with 23.
Grab the next digit (2) from the dividend, add it to 23, then carry on: 232 / 648

Moving on to step 7:
648 goes into 232 0 times with a remainder of 232.
Use 0 as the next digit of our solution. 
Result so far: 13470.0
Subtract 0 from 232 to get 232.
Include the next digit (4) from the dividend after 232, then repeat: 2324 / 648

Going ahead to step 8:
648 can be fit into 2324 3 times, resulting in a remainder of 380.
Write down 3 as next digit of the result. 
Result so far: 134703.0
Subtract 1944 from 2324 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 9:
When dividing 3800 by 648, we get 5 with a remainder of 560.
The next digit of our result is 5. 
Result so far: 134703.5
If we subtract 3240 from 3800, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 10:
If we divide 5600 by 648, we get 8 and a remainder of 416.
Use 8 as the next digit of our solution. 
Result so far: 134703.58
Deduct 5184 from 5600 and we're left with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

On to step 11:
If we divide 4160 by 648, we get 6 and a remainder of 272.
Record the quotient 6 as the next digit in the result. 
Result so far: 134703.586
Subtract 3888 from 4160 to get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 12:
648 can be fit into 2720 4 times, resulting in a remainder of 128.
Record the quotient 4 as the next digit in the result. 
Result so far: 134703.5864
Subtracting 2592 from 2720 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 13:
The number 648 fits into 1280 1 times, leaving a remainder of 632.
The next digit of our result is 1. 
Result so far: 134703.58641
If we take 648 away from 1280, we end up with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Step 14:
648 goes into 6320 9 times with a remainder of 488.
The number 9 becomes the next digit in our result. 
Result so far: 134703.586419
Subtract 5832 from 6320 to get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Advancing to step 15:
If we divide 4880 by 648, we get 7 and a remainder of 344.
The next digit of our result is 7. 
Result so far: 134703.5864197
Subtract 4536 from 4880 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Let's proceed to step 16:
3440 divided by 648 is 5 with a remainder of 200.
Record the quotient 5 as the next digit in the result. 
Result so far: 134703.58641975
Subtract 3240 from 3440 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 134703.58641975 with a remainder of 2e-07.