Monochromatic light with wavelength \(\lambda = 500\text{ nm}\) is incident normally on a single narrow slit of width \(a = 0.025\text{ mm}\). The resulting diffraction pattern is observed on a flat screen placed at a distance \(D = 1.2\text{ m}\) parallel to the slit. What is the distance on the screen between the center of the central bright maximum and the first dark fringe?