text: import React from "react";
  import ReactDOM from "react-dom";
  import "./index.css";
  import Calculator from "./main/Calculator";
  import registerServiceWorker from "./registerServiceWorker";
  
  ReactDOM.render(
    <div>
      <h1>Calculadora</h1>
      <Calculator />
    </div>,
    document.getElementById("root")
  );
  registerServiceWorker();
  