I hate my calculator. Its battery is dead since I left it on for the whole holidays.

Now it runs solely on solar power, since I'm too lazy to change the calculator batteries.

Meaning that If you cover the solar thingy at the top, the calculator goes off.

The worst thing is if I want to do maths at night, I'll have to switch on an extra lamp to "feed" the calculator light. And when I have to calculate I will need to do it directly under the lamp.

I hate my calculator.