Sincerely, everyone.

This was a rollercoaster ride. Thanks, math.

This can be marked as resolved.

It is now clear that I need to return a mathematical equation as as string and not just the number 24 🤦‍♂️. Now I just need to have this not time out at the 200th test.

fair warning, I am brute forcing with 10000+ lines...
receiving the following after passing basic tests:

TypeError: s.match is not a function
at isValidR
at /home/codewarrior/index.js:10920:16
at /home/codewarrior/index.js:10942:5
at Object.handleError

/runner/frameworks/javascript/cw-2.js:237
throw ex;
^

TypeError: s.match is not a function
at isValidR (/home/codewarrior/index.js:10935:8)
at /home/codewarrior/index.js:10920:16
at /home/codewarrior/index.js:10942:5
at Object.handleError (/runner/frameworks/javascript/cw-2.js:233:11)
at Object. (/home/codewarrior/index.js:3:6)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at [eval]:1:1
at ContextifyScript.Script.runInThisContext (vm.js:50:33)
at Object.runInThisContext (vm.js:139:38)
at Object. ([eval]-wrapper:6:22)