(two, three etc) -fold / times (multiplier) / double / to increase or multiply
倍
=
亻
+
咅
:
Beelzebub (b) made seven times (倍) three poo-poos (咅) in the Eiffel Tower's bathroom (ei4) and challenges Rosa Luxemburg (亻) to tell him how many poo-poos there are. Rosa should take great care: every time she gives the wrong answer Beelzebub doubles (倍) the number of the poo-poos.