The main reaction (unbalanced) in the manufacture of synthetic cryolite for aluminium electrolysis is
$HF+Al{\left(OH\right)}_3+NaOH\to N{a}_{3}Al{F}_6+H_{2}O$
Assuming a 96.5% yield of dried, crystallized product, what mass in (kg) of cryolite can be obtained from the reaction of  $39.0kgofAl{\left(OH\right)}_3$
$(Atwts:H=1,F=19,O=16,Na=23,Al=27)$