Question 1024972
This is called scientific notation.
It looks like:
{{{ 5.287931*10^11 }}}
-------------------
The {{{ 5 }}} is always a units digit. You would 
NOT have:
{{{ 52.87931*10^10 }}}
even though it is the same value
So you have a units digit followed by
as many other significant digits that you need
-------------------
Then there is a multiplier which is 10 raised to
a power which can be any number, positive
or negative, for example:
{{{ 5.287931*10^(-11) }}}
This is the reciprocal of my example.
-------------------
The way you presented it:
3.3011e+9 is just another way of saying:
{{{ 3.3011*10^9 }}}, and if you expand it:
{{{ 330110000 }}}
( 9 places after decimal point )