KöMaL 2016 K511

A merchant regularly buys apricot jam from a canning factory. One day, he bought a certain quantity, and paid a total of $180 000$ forints (HUF, Hungarian currency) for it. In the next month, he saw that the price of apricot jam was significantly reduced: they were selling 5 jars of jam for the price of 3 jars. The merchant was so happy that he immediately bought four times the quantity he had bought in the previous month. How much did he pay altogether for the jam with reduced price?