In the open$-$ended multi$-$fluid manometer in the figure, find the pressure in tank A in Pa $,$ assuming that $h1=200mm,h2=20mm,h3=40mm,h4=120mm,h5=70mm,h6=10mm$ and $p_{-}F1=800k\frac{g}{m}3,p_{-}F2=1000k\frac{g}{m}3,p_{-}F3=600k\frac{g}{m}3,p_{-}F4=$ not constant, $p_{-}F5=700$ kg$/$m$3.$