What is the price of an American CALL option that is expected to pay a dividend of $$3$

in three months with the following parameters?

$s0=$$$40$

$d=$$$3in3$ months

$k=$$$40$

$r=10\%$

sigma $=20\%$

$T=0\mathrm{.}5$ years

$($required precision $0\mathrm{.}01\frac{+}{-}0\mathrm{.}01)$