Only science geeks are likely to get this, but it’s surprisingly accurate!
As a biochemist I have become quite accustomed to doing unit conversions in my head and working in scientific notation. But we all occasionally have to stop and count decimal places to get it right. The owner of this calculator (a student left it in one of our teaching labs) obviously has particular problems with this!
At lunch time I happened to used the word ‘complicated’, Hannah boldly announced that she knew what complicated means: “it means you can’t poo!”