Simplify the expression. Use only positive exponents.
(
x
−
5
y
−
3
)
3
(
x
4
y
−
1
)
2
\displaystyle \frac{{\left({x}^{{-{{5}}}}{y}^{{-{{3}}}}\right)}^{{3}}}{{\left({x}^{{4}}{y}^{{-{{1}}}}\right)}^{{2}}}
(
x
4
y
−
1
)
2
(
x
−
5
y
−
3
)
3
=
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\displaystyle