Basically my problem is that Mathemtaica read
(10+1.4)-6i = 11.4-6i.
But it is actually
10 + (1.44*10^(-6)i).
10+1.4E-6i comes from importing data generated by other software. I don't have the degree of freedom to change the data format, so my only hope is to convert it in mathematica by replacement rules or some other tricks. But I fail to make it.
I appreciate any help.