The following bid$-$ask rates are offered by three banks:

Bid Ask

Bank Ametis GBP$/$USD $1\mathrm{.}28001\mathrm{.}2850$

Bank Berlian MYR$/$USD $4\mathrm{.}00004\mathrm{.}1500$

Bank Zirkon GBP$/$MYR $5\mathrm{.}23005\mathrm{.}2550$

Calculate the triangular arbitrage by using MYR$1000.$