how do you do this?

5. You plan on taking a cruise every 2 years, ntarting a year from now and ending in 41 years (Le., cruises at t=1,3,5,.,41). You expect each erulse to cost $3,000. How truch do you need to depasit todny, in an acoount that pays 10%, annual compounding, to fund thnse vacation plans