73380425 divided by 648 
We want to figure out the number of times 73380425 can be divided by 648.

On to step 1:
The number 648 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 648

Advancing to step 2:
73 divided by 648 is 0 with a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Take the next digit (3) from the dividend and append it to 73, then repeat: 733 / 648

Moving on to step 3:
If we divide 733 by 648, we get 1 and a remainder of 85.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 648 away from 733, we end up with 85.
Bring next digit (8) of the dividend behind the 85 and repeat the process: 858 / 648

Advancing to step 4:
648 goes into 858 1 times with a remainder of 210.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 648 from 858 leaves us with 210.
Fetch the next digit (0) from the dividend, attach it to 210 and continue: 2100 / 648

Advancing to step 5:
648 goes into 2100 3 times with a remainder of 156.
The number 3 becomes the next digit in our result. 
Result so far: 113.0
Deduct 1944 from 2100 and we're left with 156.
Include the next digit (4) from the dividend after 156, then repeat: 1564 / 648

Going ahead to step 6:
648 can be fit into 1564 2 times, resulting in a remainder of 268.
Use 2 as the next digit of our solution. 
Result so far: 1132.0
The remainder is 268 after subtracting 1296 from 1564.
Bring next digit (2) of the dividend behind the 268 and repeat the process: 2682 / 648

On to step 7:
2682 divided by 648 is 4 with a remainder of 90.
Put 4 as the next digit of the answer. 
Result so far: 11324.0
If we subtract 2592 from 2682, we get 90.
Append the next digit (5) from the dividend to 90 and continue with: 905 / 648

Advancing to step 8:
When dividing 905 by 648, we get 1 with a remainder of 257.
Put 1 as the next digit of the answer. 
Result so far: 113241.0
If we subtract 648 from 905, we get 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Advancing to step 9:
648 can be fit into 2570 3 times, resulting in a remainder of 626.
Use 3 as the next digit of our solution. 
Result so far: 113241.3
Subtract 1944 from 2570 to get 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

Let's proceed to step 10:
If we divide 6260 by 648, we get 9 and a remainder of 428.
Put 9 as the next digit of the answer. 
Result so far: 113241.39
Deduct 5832 from 6260 and we're left with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

On to step 11:
When dividing 4280 by 648, we get 6 with a remainder of 392.
Record the quotient 6 as the next digit in the result. 
Result so far: 113241.396
Subtract 3888 from 4280 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 12:
If we divide 3920 by 648, we get 6 and a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 113241.3966
Subtracting 3888 from 3920 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The quotient of the division is 113241.3966, and the remainder is 0.00032.