We look at the division of 72428144 by 800 
We want to divide 72428144 by 800.

Moving on to step 1:
The number 800 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 800

Step 2:
The number 800 fits into 72 0 times, leaving a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Grab the next digit (4) from the dividend, add it to 72, then carry on: 724 / 800

Going ahead to step 3:
800 goes into 724 0 times with a remainder of 724.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 724 after subtracting 0 from 724.
Take the next digit (2) from the dividend and append it to 724, then repeat: 7242 / 800

Step 4:
800 can be fit into 7242 9 times, resulting in a remainder of 42.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 7200 from 7242 to get 42.
Take the next digit (8) from the dividend and append it to 42, then repeat: 428 / 800

Step 5:
428 divided by 800 is 0 with a remainder of 428.
Write down 0 as next digit of the result. 
Result so far: 90.0
The remainder is 428 after subtracting 0 from 428.
Append the next digit (1) from the dividend to 428 and continue with: 4281 / 800

Going ahead to step 6:
When dividing 4281 by 800, we get 5 with a remainder of 281.
Put 5 as the next digit of the answer. 
Result so far: 905.0
Deduct 4000 from 4281 and we're left with 281.
Include the next digit (4) from the dividend after 281, then repeat: 2814 / 800

Moving on to step 7:
2814 divided by 800 is 3 with a remainder of 414.
The number 3 becomes the next digit in our result. 
Result so far: 9053.0
If we subtract 2400 from 2814, we get 414.
Grab the next digit (4) from the dividend, add it to 414, then carry on: 4144 / 800

Moving on to step 8:
If we divide 4144 by 800, we get 5 and a remainder of 144.
Record the quotient 5 as the next digit in the result. 
Result so far: 90535.0
Subtract 4000 from 4144 to get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Advancing to step 9:
The number 800 fits into 1440 1 times, leaving a remainder of 640.
Record the quotient 1 as the next digit in the result. 
Result so far: 90535.1
Deduct 800 from 1440 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 10:
800 can be fit into 6400 8 times, resulting in a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 90535.18
If we subtract 6400 from 6400, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
800 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 90535.18
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 12:
800 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 90535.18
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 90535.18 with a remainder of 0.0.