Onella 3D Music

First person to answer this question correctly and I will do one song edit for you (song must be made in 2017 or 2018)!!
(I'm going to sleep right now so don't expect reply until later LOL)

What is the frequency of a wave that has a velocity
of 2.8 m/s and a wavelength of 8.9 m ?

7 years ago | [YT] | 21