Chrome: 71.0.3567.0 Dev

Steps to repro:
# With Chromevox enabled (ctrl+alt+z), open Calculator
# Tab around the calculator and notice which items are in the tab order
# Enter a few equations without clearing the calculator such as 1+1 and 2+2
# Tab around again and notice that each element of all equations in history are now in the tab order, but it is not possible to understand which elements belong to which calculation

Expected: A more dynamic way of presenting the display and history to Chromevox users

Actual: Chromevox users won't know that this calculator has a history of all calculations since it is difficult to review and interact with the display and history