diff --git a/src/scripts/main.js b/src/scripts/main.js
index c6e3f8784..213d4f8b6 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -1,3 +1,29 @@
 'use strict';
 
-// write your code here
+const populationNodes = document.querySelectorAll('.population');
+
+let total = 0;
+let validCount = 0;
+
+populationNodes.forEach((node) => {
+  const rawText = node.textContent.replace(/,/g, '');
+  const populationNumber = Number(rawText);
+
+  if (!isNaN(populationNumber) && rawText.trim() !== '') {
+    total += populationNumber;
+    validCount++;
+  }
+});
+
+const average = validCount > 0 ? Math.round(total / validCount) : 0;
+
+const averageElement = document.querySelector('.average-population');
+const totalElement = document.querySelector('.total-population');
+
+if (averageElement) {
+  averageElement.textContent = average.toLocaleString('en-US');
+}
+
+if (totalElement) {
+  totalElement.textContent = total.toLocaleString('en-US');
+}