The South African Rand is trading $19\mathrm{.}1219\mathrm{.}31$ Rand$/$$$.$ The UK pound is trading at $1\mathrm{.}2703-$

$1\mathrm{.}2712$ $$/$pound$.$ What range of pound$/$Rand rates imply no opportunity for arbitrage? Make

sure to go out to $5$ decimal places in your answer.