Scientifical notation

I dunno if it's called scientifical notation in english, but I need help with that.

Here's my problem: (2,3.10^-11) : (1,6 * 10^8)^-2 * (1,5 * 10^3)^4

How can I resolve?

Tnx a lot.

Your problem is all messed up. The integers involved are in scientific notation. I am confused by the comma's (,) and the colon (:) You want to first break down your exponents, but the way you have this problem formatted confuses the order or operations. If you interpret the comma's (,) for decimals. Exclude any systematic order. Assume the colon (:) is to (|) separate from the other two variables.. I get,

4.5*10^-15

I solved by this calculation
((2.3*10^-11))(1.6*10^8)^-2*(1.5*10^3)^4

If this is the wrong answer. I suggest you format the problem correctly. You do not specify operations of the coefficients.