Answer
$-\frac{2y^{3}}{15}$
Work Step by Step
$(-\frac{1}{3}y^{2})(\frac{2}{5}y)=-\frac{1}{3}\times\frac{2}{5}\times y^{2+1}=-\frac{2}{15}\times y^{3}=-\frac{2y^{3}}{15}$
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