i solved most of this question, but am not sure about the last part and i was hoping someone would help me.

As part of a laser light show a technician is adjusting a diffraction grating. A green laser with a wavelength of 532 nm is shone on a diffraction grating with 2700 lines/cm. The screen is 35 m from the diffraction grating.

a. What is the distance between the slits of the diffraction grating?

a. How far from the central maximum will the bright fringe be?

But i don't know how to caluclate the distance between the central maximum and bright fringe.. and i was hopeing somone would explain how to me.