Maybe greek prefixes or even spelling out the bigger units? I.e. 9.4 gigagrams or 54 billion kilograms.

Of course you might have the issue of short scale vs. long scale billions but a footnote should solve that.

Yeah. A friend was playing with a group in a room and one of them was trying to read out the questions. Not a problem with 800 gorillas but it is with bigger numbers. Hmm, not sure what to do. The Greek prefixes I find really hard to remember! For simplicity and debugging it was easiest to just slap the numbers up.

Could you just have a simple bar graph that showed their relative sizes? Two numbers with a bunch of zeroes are hard to compare.

That'd be great to see!

Perhaps a toggle?