We're dividing 72291858 by 80 
We want to divide 72291858 by 80.

Step 1:
80 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 80

Moving on to step 2:
80 can be fit into 72 0 times, resulting in a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Take the next digit (2) from the dividend and append it to 72, then repeat: 722 / 80

Moving on to step 3:
80 can be fit into 722 9 times, resulting in a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 720 from 722 and we're left with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 80

Step 4:
The number 80 fits into 29 0 times, leaving a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
If we take 0 away from 29, we end up with 29.
Bring next digit (1) of the dividend behind the 29 and repeat the process: 291 / 80

Going ahead to step 5:
80 goes into 291 3 times with a remainder of 51.
Use 3 as the next digit of our solution. 
Result so far: 903.0
Subtract 240 from 291 to get 51.
Fetch the next digit (8) from the dividend, attach it to 51 and continue: 518 / 80

Let's proceed to step 6:
80 can be fit into 518 6 times, resulting in a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 9036.0
If we take 480 away from 518, we end up with 38.
Bring next digit (5) of the dividend behind the 38 and repeat the process: 385 / 80

On to step 7:
The number 80 fits into 385 4 times, leaving a remainder of 65.
The next digit of our result is 4. 
Result so far: 90364.0
If we subtract 320 from 385, we get 65.
Bring next digit (8) of the dividend behind the 65 and repeat the process: 658 / 80

Step 8:
80 can be fit into 658 8 times, resulting in a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 903648.0
Subtracting 640 from 658 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
The number 80 fits into 180 2 times, leaving a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 903648.2
If we subtract 160 from 180, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
80 can be fit into 200 2 times, resulting in a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 903648.22
Subtract 160 from 200 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 903648.22, and the remainder is 0.04.