Shorty Jones wants to buy a one-way bus ticket to Mule-Snort, Pennsylvania. The ticket costs $142, 12) but Mr. Jones has only $80. If Shorty puts the money in an account that pays 9% interest compounded monthly, how many months must Shorty wait until he has $142 (round to the nearest month)?

How do I solve this using the financial calculator? what should I put in for I/Y, PV, FV, PMT? I am getting 6.65 for N but the answer in months is 77.