The speed of light is a constant and doesn't need calculation. However, it's represented by 'c' in equations, particularly in E=mc^2, Einstein's mass-energy equivalence formula.
As we continue exploring the universe and pushing the boundaries of our understanding, the speed of light remains a key player in our journey. Its speed, effects, and applications permeate our lives, shaping everything from the technology we use to our fundamental understanding of reality. The speed of light, while a limit in many ways, remains an open door to the universe's myriad wonders.