[qwery]

> I think the things chosen are a bit strange. I've never seen anyone write '15070 grams', it'd almost always be given as 1.507 kilograms.

I'm sure it's just a typo, but 15,000 grams is 15 kilograms. So: 15.07 kg.

I don't think they arrived at some of the more extreme examples by accident, but I could only speculate on the intent behind them.

[physicsguy]

Definitely a typo :D I'd not had my morning coffee!