Caculate the wavelength of electromagnetic radiation having a frequency of 1.37 x 10^15 hz

the wavelength  of electromagnetic radiation  having a frequency  of 1.37 × 10¹⁵  is  2.18 ×  10⁻⁷

  calculation

wavelength = speed of light/ frequency

speed  of light = 3.0  × 10⁸ m/sec

 frequency=  1.37  × 10¹⁵ hz = 1.37× 10¹⁵ 1/sec

wavelength  = (3.0 × 10⁸ m/sec) / (1.37  × 10¹⁵ 1/sec)

 = 2.18 × 10 ⁻⁷ m

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

i do not get it   at all