Suppose a beam of red light from an He-Ne laser ( = 633 nm) strikes a screen

Suppose a beam of red light from an He-Ne laser (λ = 633 nm) strikes a screen containing two narrow slits separated by 0.200 mm. The fringe pattern is projected on a white screen located 1.00 m away. Find the distance in millimeters between adjacent bright areas near the center of the interference pattern that is produced.