simple solution approach
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```javascript []\nclass Calculator {\n    \n    /** \n     * @param {number} value\n     */\n    constructor(value) {\n        this.result = value;\n    }\n    \n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n    add(value){\n        this.result +=value\n        return this;\n    }\n    \n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n    subtract(value){\n            this.result -=value\n             return this;\n    }\n    \n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */  \n    multiply(value) {\n            this.result *=value\n             return this;\n    }\n    \n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n    divide(value) {\n        if (value !== 0) {\n     \n    this.result /= value;\n    return this;\n    }else{\n        throw new Error("Division by zero is not allowed")\n    }\n    }\n    \n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n    power(value) {\n         this.result = Math.pow(this.result, value);\n    return this;\n    }\n    \n    /** \n     * @return {number}\n     */\n    getResult() {\n        return this.result;\n    }\n}\n```
['JavaScript']