Hi!

Could anybody tell me why evaluations of this two expressions in Mathematica 9

In[1] := InverseFunction[247.123456789`^2 Log[#1] + 2*247.123456789` #1 + #1^2/2 &][2123456.12345`]

In[2] := InverseFunction[247.123456789`^2 Log[#1] + 2*247.123456789` #1 + #1^2/ 2 &][2123456.1234`]

lead to different type of answers:

Out[1] := InverseFunction[247.123^2 Log[#1] + 2 247.123 #1 + #1^2/2 &][2.12346*10^6] 

Out[2] := 1404.69

The only difference is the number of digits after the point in the argument. How can I force M9 to show me a numerical result in the second case? //N does not help.

Thank you in advance.