I asked for directions to the embassy at the police box.
Himari, the new girl in this police box, is Miss Popular.
Excuse me, officer. Where is the nearest police box? I need to call the police because some man just called me fat.
This word is a little tricky — at first, the combination of mix and number in a series doesn't seem to add up to police box, but there's a catch. This word is actually an abbreviated combo of two other words: The 交 comes from「交替」(in rotation) and the 番 comes from「立番」(standing watch).
A police box is basically a tiny community police station staffed by one or two officers. It's something that is not common in many Western countries, but it is pretty much all over Japan.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.