The postal service of a country charges $0.34 postage for a letter weighing up to 1​ ounce, plus $0.26 for each additional ounce​ (or fraction of an​ ounce) up to 5 ounces. Letters weighing more than 5 ounces do not qualify for these rates.

How much does it cost to send a ​3.3-ounce ​letter?