99290256 ÷ 648 
We're looking to find how many times 648 goes into 99290256.

Going ahead to step 1:
9 divided by 648 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 648

Advancing to step 2:
When dividing 99 by 648, we get 0 with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Grab the next digit (2) from the dividend, add it to 99, then carry on: 992 / 648

Moving on to step 3:
The number 648 fits into 992 1 times, leaving a remainder of 344.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 648 from 992 and we're left with 344.
Grab the next digit (9) from the dividend, add it to 344, then carry on: 3449 / 648

Let's proceed to step 4:
648 goes into 3449 5 times with a remainder of 209.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 209 after subtracting 3240 from 3449.
Bring next digit (0) of the dividend behind the 209 and repeat the process: 2090 / 648

Advancing to step 5:
The number 648 fits into 2090 3 times, leaving a remainder of 146.
The next digit of our result is 3. 
Result so far: 153.0
If we subtract 1944 from 2090, we get 146.
Bring next digit (2) of the dividend behind the 146 and repeat the process: 1462 / 648

Step 6:
The number 648 fits into 1462 2 times, leaving a remainder of 166.
Use 2 as the next digit of our solution. 
Result so far: 1532.0
Deduct 1296 from 1462 and we're left with 166.
Include the next digit (5) from the dividend after 166, then repeat: 1665 / 648

Step 7:
The number 648 fits into 1665 2 times, leaving a remainder of 369.
Use 2 as the next digit of our solution. 
Result so far: 15322.0
Subtract 1296 from 1665 to get 369.
Include the next digit (6) from the dividend after 369, then repeat: 3696 / 648

Going ahead to step 8:
If we divide 3696 by 648, we get 5 and a remainder of 456.
The number 5 becomes the next digit in our result. 
Result so far: 153225.0
Deduct 3240 from 3696 and we're left with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 9:
When dividing 4560 by 648, we get 7 with a remainder of 24.
Use 7 as the next digit of our solution. 
Result so far: 153225.7
If we subtract 4536 from 4560, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
When dividing 240 by 648, we get 0 with a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 153225.7
If we take 0 away from 240, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 11:
648 can be fit into 2400 3 times, resulting in a remainder of 456.
Record the quotient 3 as the next digit in the result. 
Result so far: 153225.703
Deduct 1944 from 2400 and we're left with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 12:
If we divide 4560 by 648, we get 7 and a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 153225.7037
Subtracting 4536 from 4560 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 13:
When dividing 240 by 648, we get 0 with a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 153225.7037
Subtract 0 from 240 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 14:
648 goes into 2400 3 times with a remainder of 456.
Put 3 as the next digit of the answer. 
Result so far: 153225.703703
Subtract 1944 from 2400 to get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Going ahead to step 15:
4560 divided by 648 is 7 with a remainder of 24.
The next digit of our result is 7. 
Result so far: 153225.7037037
If we subtract 4536 from 4560, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 16:
When dividing 240 by 648, we get 0 with a remainder of 240.
Write down 0 as next digit of the result. 
Result so far: 153225.7037037
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The final result is 153225.7037037 with a remainder of 2.4e-07.