text: "use strict";
  
  class Calculator {
  
    constructor(initialNumber) {
      this.number = initialNumber || 0;
    }
  
    add(number) {
      this.number += number;
    }
  
    subtract(number) {
      this.number -= number;
    }
  
    multiply(number) {
      this.number *= number;
    }
  
    divide(number) {
      this.number /= number;
    }
  
  }
  
  module.exports = Calculator;
  