JavaScriptのオブジェクトにreduceメソッドを適用するにはどうすればよいですか？

以下は、JavaScriptのオブジェクトにreduceメソッドを適用するためのコードです-

例

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .result,.sample {
      font-size: 18px;
      font-weight: 500;
      color: rebeccapurple;
   }
   .result {
      color: red;
   }
</style>
</head>
<body>
<h1>Reduce method for objects in JavaScript</h1>
<div class="sample">{ a:6, b:2, c:9, d:5, }</div>
<div class="result"><br /></div>
<button class="Btn">CLICK HERE</button>
<h3>Click on the above button to multiply the above object values together</h3>
<script>
   let resEle = document.querySelector(".result");
   let BtnEle = document.querySelector(".Btn");
   let multiplyObj = {
      a: 6,
      b: 2,
      c: 9,
      d: 5,
   };
   BtnEle.addEventListener("click", () => {
      let multiplyTotal = Object.values(multiplyObj).reduce((a, b) => a * b);
      resEle.innerHTML += "Multiplication of the object values = " + multiplyTotal;
   });
</script>
</body>
</html>