How can I jump to a cell reference, in Google Sheets?

Imagine I have a cell with a formula such as:

   =RHSP!$Z$669

Where this cell gets the contents of Z, row 669 of sheet RHSP.

Is there a shortcut to hover over that cell and jump to Z669? What's the fastest way to either highlight or go to the target range of a formula in gSheets and or Online Excel?