There's life on Mars!

A device has been found on Mars that appears to be some kind of calculator. It seems to work the same way, the only peculiar thing about it, are those strange symbols.

It is your job to decipher these symbols! Place the familiar numbers and operator symbols on the empty calculator to match the symbols on the Martian calculator.

It's difficult. Maybe this job is more suited for a NASA scientist

For those who want to try anyway, there are special training levels: easy and medium. So give them a try!

There are also hints available, you will need them.

Good luck.