So what you do is convert these numbers to their original form so...
1.4 x 10^6 = 1,400,000
and
3.2 x 10^4 = 32,000
Now multiply 1,400,000 and 32,000
= 44,800,000,000
Convert that into scientific notation.
Your answer is 4.48 x 10^10
I hope this helps love! :)