Iced tea is made by adding ice to $1\mathrm{.}8$ kg of hot tea, initially at $80\backslash$deg C$.$ How many kg of ice, initially at $0$ degree C$,$ are required to bring the mixture to $10\backslash$deg C$?($Lf$=3\mathrm{.}33$ x $10^5$ J$/$kg $,$ c$\_$w $=4186$ J$/$kg $*$ degrees C$).$ Write your answer rounding to first decimal place without units.