HP 10BII Owner's Manual page 84

When you calculate NPV, the result is stored in PV for your
convenience. To recall that result, press @D@. If you haven't changed
the TVM values from the last example using NPV (page 82), when you
press (CO (PV) the result is 27,199.92.
When you calculate IRR/YR, the result is also stored in I/YR. For the
previous example, press @@)@Ү® to display the annualized yield 12.49.
84 6:Cash Flow Calculations