add task solution

src/scripts/main.js

@@ -1,3 +1,36 @@
 'use strict';
 
 // write your code here
+const allElement = document.querySelectorAll('.population');
+const numbers = [];
+
+allElement.forEach((el) => {
+  const text = el.textContent.replace(/[, ]+/g, '');
+  const num = Number(text);
+
+  if (Number.isFinite(num)) {
+    numbers.push(num);
+  }
+});
+
+const total = numbers.reduce((sum, el) => sum + el, 0);
+let average = 0;
+
+if (numbers.length > 0) {
+  average = Math.round(total / numbers.length);
+}
+
+const totalFormat = total.toLocaleString('en-US');
+const averageFormat = average.toLocaleString('en-US');
+
+const totalEl = document.querySelectorAll('.total-population');
+
+totalEl.forEach((el) => {
+  el.textContent = totalFormat;
+});
+
+const averageEl = document.querySelectorAll('.average-population');
+
+averageEl.forEach((el) => {
+  el.textContent = averageFormat;
+});