Hi all!
I may be late to the party on this one, but I recently discovered the “Arbitrary text” operator and have been using it together with :converted to number. It has been very useful for composing complicated formulas and enforcing the “order of operations”. It also allows me to copy / paste & edit discrete parts of an expression (normally I am forced to delete the whole expression if I want to change something at the beginning of the expression).
I’m also using the new “experimental” parenthesis feature (I believe you can enable this in Settings → Versions). It’s pretty good (not perfect yet, but definitely an improvement).
You can go as many levels deep with “Arbitrary text” as you need.
Outer level:
Inside the Arbitrary text:
Inside the inner Arbitrary text:
Hope this helps someone out there 
!
