十多億

十 = 一 + 丨 : Mnemonic symbol: a holy cross. Sherlock Holmes (sh-) is investigating a very strange thing he found in the kitchen of the space station (-2): A big pyramid made of ten (十) crosses (十), which are in turn made out of flutes (一) and dinosaur bones (丨).

多 = 夕 : Mnemonic symbol: Immanuel "Many" Kant.

Many (多) and Doggy Dog (du) have great fun chasing a bat (夕) in front of the observatory (o1). After a while there are two bats (多), and it's not so easy to chase them any more. Suddenly there are more and more (多) bats! Now Many and Doggy Dog experience what it is like to be chased for a change.

亿 = 乙 + 亻 : A big sack of money with a big dollar sign on it.

亿 = 乙 + 亻 : Maud Younger and Rosa Luxemburg are fighting about a sack of money with 100000000 bucks. Maud has the advantage of having a silver medal to beat Rosa with.