Answer
$10xy^3$
Work Step by Step
RECALL:
The quotient rule of exponents states that: $\dfrac{a^m}{a^n}=a^{m-n}, a \ne 0$.
Divide the numerical coefficients, and use the quotient rule to find:
$=10x^{2-1}y^{7-4}
\\=10x^{1}y^{3}
\\=10xy^3$