The following spot exchange rates are being quoted in the foreign exchange markets by the Nigerian branch of Barclays bank,

involving the Ghanaian Cedi $($GCC$),$ the Nigerian Naira $($NNA$),$ the U$.$S$.$ dollar $($USD$)$ and the British pound $($GBP$).$

$NN\frac{A}{U}SD=715\mathrm{.}20-719\mathrm{.}20$

$GC\frac{C}{U}SD=11\mathrm{.}1600-11\mathrm{.}260$

$US\frac{D}{G}BP=1\mathrm{.}2250-1\mathrm{.}2253$

In long hand, the above means, for example, Barclays bank will buy USD and sell NNA at $715\mathrm{.}20$ and Barclays bank will sell USD and buy NNA at $719\mathrm{.}20,$ with similar meanings for the other rates.

Q$1./$ Sally works as the finance director of Western Africa Trading. Sally's company wishes to buy $667$ mio NNA $($mio NNA means million NNA$)$ and sell GBP and she uses the rates above. How many GBP will it cost Sally's company? Give your answer to the nearest GBP$.$

As usual, do your calculations in Excel and do NOT round until the very end.