diff --git a/src/makeRobotAccountant.js b/src/makeRobotAccountant.js
index 38b9758a..8ae6089d 100644
--- a/src/makeRobotAccountant.js
+++ b/src/makeRobotAccountant.js
@@ -4,9 +4,22 @@
  *
  * @return {function}
  */
-
 function makeRobotAccountant() {
-  // write code here
+  let count = 0;
+
+  return function(number1) {
+    count++;
+
+    if (count > 3 && count % 2 === 0) {
+      return function() {
+        return 'Bzzz... Error!';
+      };
+    } else {
+      return function(number2) {
+        return number1 + number2;
+      };
+    }
+  };
 }
 
 module.exports = makeRobotAccountant;