Answer:
$300,000
Step-by-step explanation:
I have $1,000,000 which I can use to buy C$1,250,000 (C$ = $1,000,000 x 1.25). Then I would use my C$1,250,000 to buy €812,500 (€ = C$1,250,000 x 0.65). Finally, if you use your €812,500 you can purchase $1,300,000 ($ = €812,500 x 1.6).
We started with $1,000,000 and ended up with $1,300,000 by purchasing Canadian dollars first and then Euros.