WHAT IS 20*45???

20

X45
-------
100
+800
------------
900

You misspelled

Supercalifragilisticexpialidocious

To find the answer to the multiplication problem 20 * 45, you need to multiply the first number (20) by the second number (45). Here's the step-by-step process:

1. Take the first number, which is 20.
2. Multiply it by the second number, which is 45.
3. Perform the multiplication: 20 * 45 = 900.

So, the answer to the multiplication problem 20 * 45 is 900.