diff --git a/src/scripts/main.js b/src/scripts/main.js
index c6e3f8784..5cf784b4f 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -1,3 +1,25 @@
 'use strict';
 
-// write your code here
+const populationElements = document.querySelectorAll('.population');
+const totalPopulationElement = document.querySelector('.total-population');
+const averagePopulationElement = document.querySelector('.average-population');
+
+const populations = [...populationElements].map((element) => {
+  const text = element.textContent.replaceAll(',', '').trim();
+  const number = Number(text);
+
+  return Number.isNaN(number) ? 0 : number;
+});
+
+const totalPopulation = populations.reduce((sum, population) => {
+  return sum + population;
+}, 0);
+
+const averagePopulation = populations.length
+  ? Math.round(totalPopulation / populations.length)
+  : 0;
+
+totalPopulationElement.textContent = totalPopulation.toLocaleString('en-US');
+
+averagePopulationElement.textContent =
+  averagePopulation.toLocaleString('en-US');