648401 ÷ 99 
We're looking to find how many times 99 goes into 648401.

Step 1:
6 divided by 99 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 99

Advancing to step 2:
When dividing 64 by 99, we get 0 with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Fetch the next digit (8) from the dividend, attach it to 64 and continue: 648 / 99

Let's proceed to step 3:
99 goes into 648 6 times with a remainder of 54.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 594 from 648 and we're left with 54.
Take the next digit (4) from the dividend and append it to 54, then repeat: 544 / 99

Going ahead to step 4:
If we divide 544 by 99, we get 5 and a remainder of 49.
Use 5 as the next digit of our solution. 
Result so far: 65.0
Subtract 495 from 544 to get 49.
Take the next digit (0) from the dividend and append it to 49, then repeat: 490 / 99

Advancing to step 5:
99 goes into 490 4 times with a remainder of 94.
Use 4 as the next digit of our solution. 
Result so far: 654.0
If we take 396 away from 490, we end up with 94.
Grab the next digit (1) from the dividend, add it to 94, then carry on: 941 / 99

Let's proceed to step 6:
99 can be fit into 941 9 times, resulting in a remainder of 50.
The number 9 becomes the next digit in our result. 
Result so far: 6549.0
Subtract 891 from 941 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 7:
99 goes into 500 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 6549.5
Subtracting 495 from 500 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
If we divide 50 by 99, we get 0 and a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 6549.5
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 9:
99 goes into 500 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 6549.505
Subtracting 495 from 500 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
99 goes into 50 0 times with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 6549.505
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 11:
The number 99 fits into 500 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 6549.50505
Deduct 495 from 500 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 12:
If we divide 50 by 99, we get 0 and a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 6549.50505
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 13:
The number 99 fits into 500 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 6549.5050505
The remainder is 5 after subtracting 495 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
99 can be fit into 50 0 times, resulting in a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 6549.5050505
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 6549.5050505, with a leftover of 5e-08.