light travels at a speed of 3.0 x 10 / 8 / second if you used a calculator to find the distance light travels in 4,500 seconds you will get

Scientific Notation
The speed of light is
[tex]v=3\cdot10^8\text{ m/s}[/tex]If I wanted to calculate the distance traveled in t=4,500 seconds, I would have to input the following operation in the calculator:
[tex]d=3\cdot10^8\text{ m/s}\cdot4,500\text{ s=}1.35\cdot10^{12}\text{ m}[/tex]The calculator will show it as:
1.35e+12
or maybe
1.35 E 12
1.35 E +12
Those are possible outputs from a modern calculator