Add extra example

javascript/interpret.ts

@@ -1,6 +1,5 @@
 const interpret = (definitionFile, tags) => {
 
-    
 
 }
 
@@ -15,4 +14,18 @@ const example = interpret({
 
     })
 
-console.log("Expect", 1.2, "got", example)
+console.log("Expect", 1.2, "got", example)
+
+const example1 = interpret({
+        "$multiply": {
+            "highway": {
+                "residential": 1.2
+            },
+            "surface": {"asphalt": 1.1}
+        }
+    },
+    {
+        "highway": "residential",
+        "surface": "asphalt"
+
+    })