We look at the division of 72435219 by 990 
Our goal is to divide 72435219 by 990.

Step 1:
7 divided by 990 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 990

Moving on to step 2:
The number 990 fits into 72 0 times, leaving a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Take the next digit (4) from the dividend and append it to 72, then repeat: 724 / 990

Step 3:
990 goes into 724 0 times with a remainder of 724.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 724 to get 724.
Include the next digit (3) from the dividend after 724, then repeat: 7243 / 990

Moving on to step 4:
When dividing 7243 by 990, we get 7 with a remainder of 313.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 313 after subtracting 6930 from 7243.
Fetch the next digit (5) from the dividend, attach it to 313 and continue: 3135 / 990

Going ahead to step 5:
If we divide 3135 by 990, we get 3 and a remainder of 165.
Put 3 as the next digit of the answer. 
Result so far: 73.0
The remainder is 165 after subtracting 2970 from 3135.
Bring next digit (2) of the dividend behind the 165 and repeat the process: 1652 / 990

Step 6:
1652 divided by 990 is 1 with a remainder of 662.
The next digit of our result is 1. 
Result so far: 731.0
If we take 990 away from 1652, we end up with 662.
Include the next digit (1) from the dividend after 662, then repeat: 6621 / 990

Step 7:
990 goes into 6621 6 times with a remainder of 681.
The next digit of our result is 6. 
Result so far: 7316.0
Subtract 5940 from 6621 to get 681.
Bring next digit (9) of the dividend behind the 681 and repeat the process: 6819 / 990

Advancing to step 8:
6819 divided by 990 is 6 with a remainder of 879.
The next digit of our result is 6. 
Result so far: 73166.0
Subtract 5940 from 6819 to get 879.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8790, and continue the process.

On to step 9:
When dividing 8790 by 990, we get 8 with a remainder of 870.
Put 8 as the next digit of the answer. 
Result so far: 73166.8
Deduct 7920 from 8790 and we're left with 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8700, and continue the process.

Advancing to step 10:
990 can be fit into 8700 8 times, resulting in a remainder of 780.
Put 8 as the next digit of the answer. 
Result so far: 73166.88
The remainder is 780 after subtracting 7920 from 8700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

The final outcome is 73166.88, with a leftover of 0.78.