Isn't it cool?

$\begin{aligned} & = \left \lfloor \frac{1000}{3} \right \rfloor + \left \lfloor \frac{1000}{3^2} \right \rfloor + \left \lfloor \frac{1000}{3^3} \right \rfloor + \left \lfloor \frac{1000}{3^4} \right \rfloor + \left \lfloor \frac{1000}{3^5} \right \rfloor + \left \lfloor \frac{1000}{3^6} \right \rfloor \\ & = 333+111+37+12+4+1 \\ & = \boxed{498}\end{aligned}$