Arithmetic

A system of such colossal power probably can do simple mathematics

Note that for multiplication, there is no need for a sign.  Just use a space.

Don't forget the space.

You can use a * if you wish.

This one is fun

Mathematica does not switch to floating point, which is inherently less precise, unless you want it to.

We could do N[%], which says make the previous result floating point

Or

It gives

or