solution edited

src/scripts/main.js

@@ -1,3 +1,21 @@
 'use strict';
 
 // write your code here
+const populationAmounts = [...document.body.querySelectorAll('.population')];
+const populationTexts = populationAmounts.map((el) => el.textContent);
+const cleanedTexts = populationTexts.map((txt) => txt.replace(/,/g, '').trim());
+const populationNumbers = cleanedTexts.map((text) => Number(text));
+
+const sum = populationNumbers.reduce((num, start) => num + start, 0);
+const averageSum = sum / populationNumbers.length;
+
+const sumElement = document.body.querySelector('.total-population');
+const averageElement = document.body.querySelector('.average-population');
+
+const formattedSum = sum.toLocaleString('en-US');
+const formattedAverage = averageSum.toLocaleString('en-US', {
+  maximumFractionDigits: 0,
+});
+
+sumElement.textContent = formattedSum;
+averageElement.textContent = formattedAverage;

src/styles/main.scss

@@ -1,15 +1,19 @@
 @import 'fonts';
 
 body {
-  background: #eee;
+  counter-reset: section;
+
   display: flex;
-  margin: 0;
+  align-items: center;
+  justify-content: center;
+
   width: 100vw;
   height: 100vh;
-  justify-content: center;
-  align-items: center;
+  margin: 0;
+
   font-family: Roboto, sans-serif;
-  counter-reset: section;
+
+  background: #eee;
 }
 
 h1 {
@@ -18,28 +22,32 @@ h1 {
 
 .list {
   margin: 32px 0;
-  list-style: none;
   padding: 0;
+  list-style: none;
   &__item {
-    margin: 8px;
-    border-bottom: 1px solid darkgrey;
+    position: relative;
+
     display: flex;
     justify-content: space-between;
-    padding: 4px 4px 4px 30px;
-    position: relative;
 
-    img {
-      margin-right: 8px;
-    }
+    margin: 8px;
+    padding: 4px 4px 4px 30px;
+    border-bottom: 1px solid darkgrey;
 
     &::before {
-      color: #565754;
-      counter-increment: section;
       content: counter(section);
+      counter-increment: section;
+
       position: absolute;
       top: 50%;
       left: 5px;
       transform: translateY(-60%);
+
+      color: #565754;
+    }
+
+    img {
+      margin-right: 8px;
     }
   }
 }