fix: update to use local app/ dir (#1872)

* fix: update to use local app/ dir

* fix: update if statement on macos xlarge

app/calculator.py

@@ -0,0 +1,15 @@
+class Calculator:
+
+    def add(x, y):
+        return x + y
+
+    def subtract(x, y):
+        return x - y
+
+    def multiply(x, y):
+        return x * y
+
+    def divide(x, y):
+        if y == 0:
+            return 'Cannot divide by 0'
+        return x * 1.0 / y