1002622 ÷ 648 
We're looking to find how many times 648 goes into 1002622.

Going ahead to step 1:
If we divide 1 by 648, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 648

Moving on to step 2:
648 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 648

On to step 3:
100 divided by 648 is 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 100, we end up with 100.
Bring next digit (2) of the dividend behind the 100 and repeat the process: 1002 / 648

Let's proceed to step 4:
When dividing 1002 by 648, we get 1 with a remainder of 354.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 648 from 1002 leaves us with 354.
Bring next digit (6) of the dividend behind the 354 and repeat the process: 3546 / 648

Going ahead to step 5:
If we divide 3546 by 648, we get 5 and a remainder of 306.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtract 3240 from 3546 to get 306.
Append the next digit (2) from the dividend to 306 and continue with: 3062 / 648

Step 6:
The number 648 fits into 3062 4 times, leaving a remainder of 470.
The number 4 becomes the next digit in our result. 
Result so far: 154.0
Subtract 2592 from 3062 to get 470.
Bring next digit (2) of the dividend behind the 470 and repeat the process: 4702 / 648

On to step 7:
When dividing 4702 by 648, we get 7 with a remainder of 166.
The next digit of our result is 7. 
Result so far: 1547.0
The remainder is 166 after subtracting 4536 from 4702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Let's proceed to step 8:
648 goes into 1660 2 times with a remainder of 364.
The next digit of our result is 2. 
Result so far: 1547.2
Deduct 1296 from 1660 and we're left with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Advancing to step 9:
648 can be fit into 3640 5 times, resulting in a remainder of 400.
The number 5 becomes the next digit in our result. 
Result so far: 1547.25
The remainder is 400 after subtracting 3240 from 3640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 10:
4000 divided by 648 is 6 with a remainder of 112.
Put 6 as the next digit of the answer. 
Result so far: 1547.256
If we subtract 3888 from 4000, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 11:
If we divide 1120 by 648, we get 1 and a remainder of 472.
Put 1 as the next digit of the answer. 
Result so far: 1547.2561
Subtract 648 from 1120 to get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

Going ahead to step 12:
4720 divided by 648 is 7 with a remainder of 184.
Use 7 as the next digit of our solution. 
Result so far: 1547.25617
Deduct 4536 from 4720 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 13:
When dividing 1840 by 648, we get 2 with a remainder of 544.
The number 2 becomes the next digit in our result. 
Result so far: 1547.256172
Subtract 1296 from 1840 to get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

On to step 14:
If we divide 5440 by 648, we get 8 and a remainder of 256.
Put 8 as the next digit of the answer. 
Result so far: 1547.2561728
Subtracting 5184 from 5440 leaves us 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.

Going ahead to step 15:
648 goes into 2560 3 times with a remainder of 616.
Write down 3 as next digit of the result. 
Result so far: 1547.25617283
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 result is 1547.25617283 with a remainder of 6.16e-07.