The effective solar flux at a particular location is $760W{m}^{-2}.$

How many photovoltaic solar panels of size $1\mathrm{.}5m1\mathrm{.}0m$ would be needed to ensure a maximum power

output of at least $4\mathrm{.}8kW,$ if the efficiency of the solar cells is $13\%?$

Give your answer as an exact whole number.

Number of panels: