How many spells can fit into a Ring of Spell Storing?

@JeremyECrawford How many spells can fit into a Ring of Spell Storing? Should it be just 1 spell that's 1st-5th level, or multiple spells?

— The Grifhinx (@grifhinx) May 3, 2017

Ring of spell storing: "The ring can store up to 5 levels worth of spells at a time" (DMG, 192). That's "spells," plural. #DnD https://t.co/JKFIHxUjPf

— Jeremy Crawford (@JeremyECrawford) May 4, 2017