二百五

二 = 一 : Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).

百 = 一 + 白 : Mnemonic symbol: a one hundred 元 bill.

Beelzebub (b) enjoys preparing to allure mortals. In the airplane's living room (ai3) he's waving a flute (一) as a magic wand and enchanting one hundred white flags (白) to look like one hundred (百) one hundred 元 bills (百).

五 = 王 + 丨 : Mnemonic symbol: a pentagram.

Martin Luther King (王) helps Willy Walrus (w) to construct a pentagram (五) out of dinosaur bones (丨) inside the space station (Ø3).

五 = 工 + 乛 : Mnemonic symbol: a pentagram.

In the space station (Ø3), Willy Walrus (w) chops up a steel beam (工) with a sickle (乛) into five (五) equal parts. He uses the five parts to assemble a steel pentagram (五).