66803424 divided by 648 
We want to figure out the number of times 66803424 can be divided by 648.

On to step 1:
648 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 648

Step 2:
648 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Grab the next digit (8) from the dividend, add it to 66, then carry on: 668 / 648

Step 3:
If we divide 668 by 648, we get 1 and a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 648 away from 668, we end up with 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 648

On to step 4:
The number 648 fits into 200 0 times, leaving a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 200, we get 200.
Take the next digit (3) from the dividend and append it to 200, then repeat: 2003 / 648

Step 5:
When dividing 2003 by 648, we get 3 with a remainder of 59.
Put 3 as the next digit of the answer. 
Result so far: 103.0
If we subtract 1944 from 2003, we get 59.
Grab the next digit (4) from the dividend, add it to 59, then carry on: 594 / 648

Going ahead to step 6:
594 divided by 648 is 0 with a remainder of 594.
Use 0 as the next digit of our solution. 
Result so far: 1030.0
If we subtract 0 from 594, we get 594.
Append the next digit (2) from the dividend to 594 and continue with: 5942 / 648

Advancing to step 7:
5942 divided by 648 is 9 with a remainder of 110.
The number 9 becomes the next digit in our result. 
Result so far: 10309.0
Deduct 5832 from 5942 and we're left with 110.
Grab the next digit (4) from the dividend, add it to 110, then carry on: 1104 / 648

Going ahead to step 8:
1104 divided by 648 is 1 with a remainder of 456.
Use 1 as the next digit of our solution. 
Result so far: 103091.0
The remainder is 456 after subtracting 648 from 1104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Advancing to step 9:
The number 648 fits into 4560 7 times, leaving a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 103091.7
Subtract 4536 from 4560 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
If we divide 240 by 648, we get 0 and a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 103091.7
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 11:
If we divide 2400 by 648, we get 3 and a remainder of 456.
Write down 3 as next digit of the result. 
Result so far: 103091.703
Subtract 1944 from 2400 to get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 12:
When dividing 4560 by 648, we get 7 with a remainder of 24.
Put 7 as the next digit of the answer. 
Result so far: 103091.7037
Subtract 4536 from 4560 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 13:
648 can be fit into 240 0 times, resulting in a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 103091.7037
Subtracting 0 from 240 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 14:
648 goes into 2400 3 times with a remainder of 456.
Put 3 as the next digit of the answer. 
Result so far: 103091.703703
Subtract 1944 from 2400 to get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Let's proceed to step 15:
4560 divided by 648 is 7 with a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 103091.7037037
Deduct 4536 from 4560 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 16:
648 can be fit into 240 0 times, resulting in a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 103091.7037037
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The quotient of the division is 103091.7037037, and the remainder is 2.4e-07.