#Electronics question: how do amplify <100mV voltages?

I simulated a simple op-amp circuit. It does what I want, with a gain of 15.
But the voltages on +/- inputs differ by 9 mV. And that's about the input offset voltage of a real #opamp ...

Is that going to work reliably on a real opamp?

And how do I estimate noise in DC situations?

#circuts #askfedi