add solution

[lubovmrk]

• DEMO LINK

[mateacademy-ai-mentor]

Review Summary

Your implementation successfully fulfills all task requirements. The code correctly parses population data from the span elements, converts strings to numbers by removing comma separators, calculates both total and average population values, and formats the output with proper thousands separators using toLocaleString('en-US'). All required elements are updated as expected, and you've adhered to the constraint of only modifying main.js. The minor suggestion about adding a guard clause for empty arrays is noted, but this won't occur with the static HTML source and doesn't affect functionality.

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