Parallel rays of monochromatic light with wavelength 588 nm illuminate two identical slits and produce an interference pattern on a screen that is 75.0 cm from the slits. The centers of the slits are 0.640 mm apart and the width of each slit is 0.434 mm. If the intensity at the center of the central maximum is 4.9010⁴ W/m2, what is the intensity at a point on the screen that is 0.840 mm from the center of the central maximum?