You are the manager of a tour dee company that receives revenues of baht 4000000 per year from tour package and baht 9000000 per year from hotel room sales. The own price elasticity of demand for tour package is (minus) -1.5 and the cross price elasticity between hotel room and tour package is (minus) -1.8. How much will the firm's total revenue change if the increase in price of tour package is 2%