99423354 divided by 648 
We're looking to find how many times 648 goes into 99423354.

Step 1:
If we divide 9 by 648, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 648

Going ahead to step 2:
If we divide 99 by 648, we get 0 and a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Bring next digit (4) of the dividend behind the 99 and repeat the process: 994 / 648

Step 3:
If we divide 994 by 648, we get 1 and a remainder of 346.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 648 away from 994, we end up with 346.
Grab the next digit (2) from the dividend, add it to 346, then carry on: 3462 / 648

Advancing to step 4:
If we divide 3462 by 648, we get 5 and a remainder of 222.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we take 3240 away from 3462, we end up with 222.
Take the next digit (3) from the dividend and append it to 222, then repeat: 2223 / 648

Step 5:
2223 divided by 648 is 3 with a remainder of 279.
The next digit of our result is 3. 
Result so far: 153.0
The remainder is 279 after subtracting 1944 from 2223.
Append the next digit (3) from the dividend to 279 and continue with: 2793 / 648

On to step 6:
If we divide 2793 by 648, we get 4 and a remainder of 201.
The next digit of our result is 4. 
Result so far: 1534.0
The remainder is 201 after subtracting 2592 from 2793.
Append the next digit (5) from the dividend to 201 and continue with: 2015 / 648

Moving on to step 7:
2015 divided by 648 is 3 with a remainder of 71.
Record the quotient 3 as the next digit in the result. 
Result so far: 15343.0
If we subtract 1944 from 2015, we get 71.
Grab the next digit (4) from the dividend, add it to 71, then carry on: 714 / 648

On to step 8:
When dividing 714 by 648, we get 1 with a remainder of 66.
The number 1 becomes the next digit in our result. 
Result so far: 153431.0
Deduct 648 from 714 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 9:
When dividing 660 by 648, we get 1 with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 153431.1
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
648 goes into 120 0 times with a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 153431.1
The remainder is 120 after subtracting 0 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 11:
When dividing 1200 by 648, we get 1 with a remainder of 552.
Record the quotient 1 as the next digit in the result. 
Result so far: 153431.101
If we subtract 648 from 1200, we get 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Going ahead to step 12:
If we divide 5520 by 648, we get 8 and a remainder of 336.
Write down 8 as next digit of the result. 
Result so far: 153431.1018
The remainder is 336 after subtracting 5184 from 5520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Step 13:
3360 divided by 648 is 5 with a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 153431.10185
The remainder is 120 after subtracting 3240 from 3360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 14:
648 can be fit into 1200 1 times, resulting in a remainder of 552.
The next digit of our result is 1. 
Result so far: 153431.101851
Subtracting 648 from 1200 leaves us with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Going ahead to step 15:
When dividing 5520 by 648, we get 8 with a remainder of 336.
Record the quotient 8 as the next digit in the result. 
Result so far: 153431.1018518
Subtracting 5184 from 5520 leaves us with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Moving on to step 16:
When dividing 3360 by 648, we get 5 with a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 153431.10185185
If we take 3240 away from 3360, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 153431.10185185 with a remaining 1.2e-07.