diff --git a/hblang/examples/arithmetic.hb b/hblang/examples/arithmetic.hb
new file mode 100644
index 0000000..52394e6
--- /dev/null
+++ b/hblang/examples/arithmetic.hb
@@ -0,0 +1,3 @@
+main := ||: int {
+	return 10 - 20 / 2 + 4 * (2 + 2) - 4 * 4;
+}
diff --git a/hblang/src/lexer.rs b/hblang/src/lexer.rs
index 54f4170..490db40 100644
--- a/hblang/src/lexer.rs
+++ b/hblang/src/lexer.rs
@@ -163,5 +163,6 @@ mod tests {
         empty => "";
         whitespace => " \t\n\r";
         example => include_str!("../examples/main_fn.hb");
+        arithmetic => include_str!("../examples/arithmetic.hb");
     }
 }