display answer in exponent form

I love using the web-calc, I do however have a question about how the answer is displayed. When the answer is very small or very large, for example, 10^15 or 10^-15. The answer appears as long string of numbers or in case of 10^-15 the answer appears with bunch of zeros.

Is there a way to display the answer in exponential form?  something like 2.54 x 10^15.

Thanks

Amit