The battery is already in and you can do the math right after unpacking.

You can find the manual here: https://education.ti.com/de/guidebook/details/de/4AF74FB5F81C45348BF24C0BFD52ECA7/30xProMP There are many videos on Youtube that explain the operation: https://www.youtube.com/results?search_query=TI+30x+pro

After checking, it seems that the delivery time for your order was estimated at 04.12 from the outset (you can refer to the confirmation e-mail). Orders placed on Sundays are never delivered the following day. For any further information on this subject, please contact https://www.galaxus.ch/help

Yes, he did. Like this: MATH > NUM > 8:mod( And then enter mod(11,3), for example.

He didn't.

Yes, the calculator has a cover on the back. This can also be used as a keyboard/display protector.

As far as I know, formulas cannot be stored, but there is a good collection of important constants in the calculator (e.g. speed of light, electron mass, electron charge, gravitational constant, etc.).

The input is like most calculators according to the AOS (Algebraic Operation System), so number function and number =?

Currently the calculator is EOL and unfortunately we do not know if and when it will be released again.