solution

[SashaGlazko]

No description provided.

[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it correctly implements all required calculator behavior and respects the given constraints. The makeCalculator function returns an object with result, add, subtract, multiply, divide, reset, and operate, and result is initialized to 0 as required. Each arithmetic method updates result using the appropriate compound assignment operators (e.g., +=, -=, *=, /=) and returns this, so method chaining works as in the examples. The operate method correctly accepts a callback and a number, calls the callback with the calculator as this, and does not add extra validation that would block using external functions, which matches the override instructions. The reset method properly sets result back to 0 and also supports chaining. Your method definitions use object method shorthand and the overall naming is consistent with a calculator abstraction, so checklist expectations are met. Nice work delivering a clean, spec-compliant implementation.

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