Why it worked
The video uses a relatable scenario of a customer trying to calculate costs, which is amplified by the comedic element of the customer's apparent confusion with basic math. This humor and relatability likely drove engagement and shares.
Summary
A person asks the price of a drink, is told it's 900, pays, and receives change. They then ask the total price of two items, which is calculated as 1100, and then asked how much money they have.