Web UI task progress should tell the number of operands

**Is your feature request related to a problem? Please describe.**

In the task detail webpage, only a progress bar is shown, but I cannot get the number of each operand.

**Describe the solution you'd like**

Give the number of each operand in the task detail webpage.

Start by locating the task detail webpage implementation and the code that renders its existing progress bar. Confirm how operand counts are represented, then update the page so the number of each operand is visible and verify the task detail view shows those counts.

Written by the indexing model from the issue text.