How much is 1 gari in nigeria?

Excuse me, could you please clarify for me the value of 1 gari in Nigeria? I'm trying to understand the local currency and its equivalents, and I'm a bit confused about the conversion rates. Is gari a commonly used unit of currency there, or is it perhaps a reference to a specific good or service? I'd appreciate any insight you could provide to help me better grasp the financial landscape in Nigeria.