scientific notation simply means, leave only one digit to the left-side of the dot, and use a 10 raised at some power.
[tex]\bf 3200000\implies 3\underline{200000.}\implies 3.200000 \times 10^6\implies 3.2\times 10^6[/tex]
so we moved the dot 6 slots over to the left, the 10 gets a 6 as exponent.