2log1/3

$$2log(1/3)=2log3^{-1}=-2log3$$

$${\mathtt{\,-\,}}\left({\mathtt{2}}{\mathtt{\,\times\,}}{log}_{10}\left({\mathtt{3}}\right)\right) = -{\mathtt{0.954\: \!242\: \!509\: \!439\: \!324\: \!9}}$$