help meh with this :)

3log 81 - 3.3log 27 + 4.3log 1/9 + 2/5.3log 243
= 3log 3^4 - 3log (3^3)^3 + 3log (3^-2)^4 + 3log (3^5)^2/5
= 4 - 9 -8 +2
= -10