87297211 ÷ 648 
We want to figure out the number of times 87297211 can be divided by 648.

On to step 1:
8 divided by 648 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 648

Step 2:
87 divided by 648 is 0 with a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Bring next digit (2) of the dividend behind the 87 and repeat the process: 872 / 648

On to step 3:
The number 648 fits into 872 1 times, leaving a remainder of 224.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 648 away from 872, we end up with 224.
Bring next digit (9) of the dividend behind the 224 and repeat the process: 2249 / 648

Advancing to step 4:
When dividing 2249 by 648, we get 3 with a remainder of 305.
The next digit of our result is 3. 
Result so far: 13.0
If we subtract 1944 from 2249, we get 305.
Take the next digit (7) from the dividend and append it to 305, then repeat: 3057 / 648

Step 5:
When dividing 3057 by 648, we get 4 with a remainder of 465.
Use 4 as the next digit of our solution. 
Result so far: 134.0
Subtract 2592 from 3057 to get 465.
Fetch the next digit (2) from the dividend, attach it to 465 and continue: 4652 / 648

Step 6:
648 can be fit into 4652 7 times, resulting in a remainder of 116.
Put 7 as the next digit of the answer. 
Result so far: 1347.0
The remainder is 116 after subtracting 4536 from 4652.
Include the next digit (1) from the dividend after 116, then repeat: 1161 / 648

Let's proceed to step 7:
648 goes into 1161 1 times with a remainder of 513.
The number 1 becomes the next digit in our result. 
Result so far: 13471.0
Deduct 648 from 1161 and we're left with 513.
Bring next digit (1) of the dividend behind the 513 and repeat the process: 5131 / 648

On to step 8:
648 can be fit into 5131 7 times, resulting in a remainder of 595.
Record the quotient 7 as the next digit in the result. 
Result so far: 134717.0
If we subtract 4536 from 5131, we get 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Advancing to step 9:
648 goes into 5950 9 times with a remainder of 118.
The number 9 becomes the next digit in our result. 
Result so far: 134717.9
If we take 5832 away from 5950, we end up with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 10:
The number 648 fits into 1180 1 times, leaving a remainder of 532.
Put 1 as the next digit of the answer. 
Result so far: 134717.91
Subtract 648 from 1180 to get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Moving on to step 11:
648 can be fit into 5320 8 times, resulting in a remainder of 136.
The number 8 becomes the next digit in our result. 
Result so far: 134717.918
Deduct 5184 from 5320 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.

Moving on to step 12:
The number 648 fits into 1360 2 times, leaving a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 134717.9182
If we subtract 1296 from 1360, we 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.

Step 13:
648 can be fit into 640 0 times, resulting in a remainder of 640.
The next digit of our result is 0. 
Result so far: 134717.9182
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.

Let's proceed to step 14:
The number 648 fits into 6400 9 times, leaving a remainder of 568.
Record the quotient 9 as the next digit in the result. 
Result so far: 134717.918209
Subtracting 5832 from 6400 leaves us with 568.
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:
When dividing 5680 by 648, we get 8 with a remainder of 496.
Record the quotient 8 as the next digit in the result. 
Result so far: 134717.9182098
Deduct 5184 from 5680 and we're left with 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Going ahead to step 16:
When dividing 4960 by 648, we get 7 with a remainder of 424.
Put 7 as the next digit of the answer. 
Result so far: 134717.91820987
Subtracting 4536 from 4960 leaves us 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.

The final outcome is 134717.91820987, with a leftover of 4.24e-07.