In an investigation, a group of students directs light from a laser pointer at a diffraction grating that has a line spacing of 1358 lines/mm. A series of bright spots appears on a screen placed 1.84 m from the grating. The students measure a distance of 62.73 cm between the central bright spot and the first order bright spot.Based on the students' measurements, the wavelength of the light emitted by the laser pointer, expressed is __________ nm.