Addition and Scientific Notation

How do you add numbers written in scientific notation?

What is the total of: 8.2x10³+9.3x10⁴+0.07x10^-3?

(Ignore significant figures)

Writing this out in traditional notation:

8200+93000+0.00007=101200.00007

In scientific notation this is: 1.0120000007x10⁵.