Convert each radian measure to degree measure.
If needed, round your answers to 3 decimal places.
Type 'pi' if you need to use $\pi$.

$\frac{-7\pi}{2}$ radians $=$ degrees.

$\frac{\pi}{6}$ radians $=$ degrees.

$\frac{5\pi}{2}$ radians $=$ degrees.

$\frac{2\pi}{3}$ radians $=$ degrees.