Processors

Here's a more detailed explanation of the Python code here:
299792458 * 100 * 1.0/1000000000 * 1/2.7.
The first term is the speed of light in meters per second (this is actually exact - a meter is defined as "the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second.".

The second term, 100 is the number of centimeters in a meter.

The third term, 1.0/1000000000 is one billionth. (Note that we need the .0 here (or at least 1.) to make Python do floating point division. Otherwise, 1/1000000000 would evaluate to 0.)