b. How many Guatemalan quetzals will Isaac get for his Brazilian reais?

Please help me with question a and b.

Thank you

Isaac Dez of Brazil. Isaac Dez Peris lives in Rio de Janeiro, Brazil. While attending school in Spain, he meets Juan Carlos Cordero from Guatemala. Over the summer holiday, Isaac decides to visit Juan Carlos in Guatemala City for a couple of weeks. Isaac's parents give him some spending money, 4,450 Brazilian real (BRL). Isaac wants to exchange his Brazilian real for Guatemalan quetzals (GTQ). He collects the following rates: Spot rate on the GTQ/EUR: Spot rate on the EUR/BRL: GTQ 10.7269 = EUR 1.00 EUR 0.4269 = BRL 1.00 = a. What is the Guatemalan quetzal/Brazilian real cross rate? The cross rate between the Guatemalan quetzal and the Brazilian real is (Round to four decimal places.)