Chemistry de broglie equation

[Rachel Maddiee]

The de Broglie equation relates to the wave property of matter.
λ = h/mv, where λ is wavelength, h is Planck's constant, m is the mass of a particle, moving at a velocity v. 
h = 6.626 x 10^-34 J•s.
m = 96.0 mg 
v = 30.0 m/s
Convert milligrams to kilograms 
m = 96.0 mg x 1g/1000 mg x 1kg/1000g = 9.60 x 10^-5 kg
Calculate the wavelength 
λ = 6.626 x 10^-34/96.0 x 10^-5 x 30.0 = 2.30 x 10^-31 m

Is this right?