Question (Thai): ผู้ที่ซื้อ Roomba Robot Vacuum เป็นผู้ดำเนินการตั๋วจำนวนเท่าใด
Question (English): How many ticket ID were conducted by the person who purchased Roomba Robot Vacuum?
Table: customer
Pandas: df[df['Product_Purchased'] == 'Roomba Robot Vacuum'].shape[0]