<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
let a = 5;
a -= 1; // a = a - 1
a *= 3; // a = a * 3
a /= 6; // a = a / 6
a %= 5; // a = a % 5
alert(a)
</script>
</body>
</html>
