We're dividing 639240 by 99 
We're looking to find how many times 99 goes into 639240.

Let's proceed to step 1:
If we divide 6 by 99, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 99

On to step 2:
63 divided by 99 is 0 with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 99

Let's proceed to step 3:
The number 99 fits into 639 6 times, leaving a remainder of 45.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we take 594 away from 639, we end up with 45.
Bring next digit (2) of the dividend behind the 45 and repeat the process: 452 / 99

Step 4:
If we divide 452 by 99, we get 4 and a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 64.0
Deduct 396 from 452 and we're left with 56.
Grab the next digit (4) from the dividend, add it to 56, then carry on: 564 / 99

Let's proceed to step 5:
564 divided by 99 is 5 with a remainder of 69.
Write down 5 as next digit of the result. 
Result so far: 645.0
Subtracting 495 from 564 leaves us with 69.
Append the next digit (0) from the dividend to 69 and continue with: 690 / 99

Advancing to step 6:
99 can be fit into 690 6 times, resulting in a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 6456.0
Subtracting 594 from 690 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 7:
960 divided by 99 is 9 with a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 6456.9
Subtracting 891 from 960 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 8:
690 divided by 99 is 6 with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 6456.96
Deduct 594 from 690 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 9:
The number 99 fits into 960 9 times, leaving a remainder of 69.
The number 9 becomes the next digit in our result. 
Result so far: 6456.969
If we subtract 891 from 960, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 10:
When dividing 690 by 99, we get 6 with a remainder of 96.
Write down 6 as next digit of the result. 
Result so far: 6456.9696
Subtracting 594 from 690 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 11:
If we divide 960 by 99, we get 9 and a remainder of 69.
Write down 9 as next digit of the result. 
Result so far: 6456.96969
Subtracting 891 from 960 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 12:
If we divide 690 by 99, we get 6 and a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 6456.969696
Subtract 594 from 690 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 13:
99 goes into 960 9 times with a remainder of 69.
Record the quotient 9 as the next digit in the result. 
Result so far: 6456.9696969
If we subtract 891 from 960, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 14:
When dividing 690 by 99, we get 6 with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 6456.96969696
Subtract 594 from 690 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Our division results in 6456.96969696 with a remaining 9.6e-08.