+9e8 commonly denotes [Scientific Notation](/wiki/Scientific_Notation) for nine hundred million (9 x 10^8). This compact form represents very large or small [Numbers](/wiki/Number) efficiently, simplifying their use in calculations and communication. It is a direct expression of numerical magnitude.
+## See also
+- [Exponent](/wiki/Exponent)
+- [Magnitude](/wiki/Magnitude)
+- [Large Numbers](/wiki/Large_Numbers)