66326269 ÷ 648 
Our goal is to divide 66326269 by 648.

On to step 1:
When dividing 6 by 648, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 648

Let's proceed to step 2:
When dividing 66 by 648, we get 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Bring next digit (3) of the dividend behind the 66 and repeat the process: 663 / 648

Step 3:
648 goes into 663 1 times with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 648 from 663 and we're left with 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 648

Advancing to step 4:
When dividing 152 by 648, we get 0 with a remainder of 152.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 152 leaves us with 152.
Include the next digit (6) from the dividend after 152, then repeat: 1526 / 648

Going ahead to step 5:
1526 divided by 648 is 2 with a remainder of 230.
Put 2 as the next digit of the answer. 
Result so far: 102.0
The remainder is 230 after subtracting 1296 from 1526.
Append the next digit (2) from the dividend to 230 and continue with: 2302 / 648

On to step 6:
When dividing 2302 by 648, we get 3 with a remainder of 358.
Put 3 as the next digit of the answer. 
Result so far: 1023.0
Subtracting 1944 from 2302 leaves us with 358.
Fetch the next digit (6) from the dividend, attach it to 358 and continue: 3586 / 648

Let's proceed to step 7:
648 can be fit into 3586 5 times, resulting in a remainder of 346.
The number 5 becomes the next digit in our result. 
Result so far: 10235.0
Deduct 3240 from 3586 and we're left with 346.
Append the next digit (9) from the dividend to 346 and continue with: 3469 / 648

On to step 8:
3469 divided by 648 is 5 with a remainder of 229.
The number 5 becomes the next digit in our result. 
Result so far: 102355.0
If we subtract 3240 from 3469, we get 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Advancing to step 9:
If we divide 2290 by 648, we get 3 and a remainder of 346.
The next digit of our result is 3. 
Result so far: 102355.3
If we take 1944 away from 2290, we end up with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Advancing to step 10:
If we divide 3460 by 648, we get 5 and a remainder of 220.
Use 5 as the next digit of our solution. 
Result so far: 102355.35
If we subtract 3240 from 3460, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 11:
648 can be fit into 2200 3 times, resulting in a remainder of 256.
Use 3 as the next digit of our solution. 
Result so far: 102355.353
Deduct 1944 from 2200 and we're left with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Advancing to step 12:
The number 648 fits into 2560 3 times, leaving a remainder of 616.
Record the quotient 3 as the next digit in the result. 
Result so far: 102355.3533
If we take 1944 away from 2560, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

The final outcome is 102355.3533, with a leftover of 0.00616.