diff --git a/unittests/operator_overload3.chai b/unittests/operator_overload3.chai
new file mode 100644
index 0000000..90b81cd
--- /dev/null
+++ b/unittests/operator_overload3.chai
@@ -0,0 +1,7 @@
+
+
+def string::`/=`(double d) { this = "${this}/=${d}"; return this; }
+
+var s = "Hello World"
+s /= 2
+
diff --git a/unittests/operator_overload4.chai b/unittests/operator_overload4.chai
new file mode 100644
index 0000000..832d984
--- /dev/null
+++ b/unittests/operator_overload4.chai
@@ -0,0 +1,6 @@
+
+
+def string::`*`(double d) { return "${this} * ${d}"; }
+
+"Hello World" * 2
+