diff --git a/calculator.txt b/calculator.txt
new file mode 100644
index 0000000..acaf561
--- /dev/null
+++ b/calculator.txt
@@ -0,0 +1,9 @@
+line 1
+
+def add(a,b){
+    return a+b;
+}
+
+def sub(a,b){
+    return a-b;
+}
\ No newline at end of file