Chemistry how :(

What is the frequency of light with a wavelength of 1.87x 10^-14m?

What is the wavelength of light with a frequency of 5.6 x 10^14 Hz?

oh I meant chemistry how not chemistry how lol my bad

its just one formula...

1 formula to find out both, come on think a bit all you have to do is switch 2 variables around on that formula to get the wave length from the frequency and vice versa

C= speed of light (unchangable)

f= c/λ
f= c/1.87x 10^14m

λ = c/f
λ = c/5.6 x 10^14hz

λ = wavelength FYI