You have sales data with columns: date, store_id, product, q…

Yоu hаve sаles dаta with cоlumns: date, stоre_id, product, quantity, revenue. Explain how you would use Pandas to: (1) calculate total revenue per store, (2) find the top 5 best-selling products by quantity, and (3) create a new column showing revenue per unit.