diff --git a/src/scripts/main.js b/src/scripts/main.js
index c6e3f8784..03e9dc617 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -1,3 +1,31 @@
 'use strict';
 
-// write your code here
+const population = document.querySelectorAll('.population');
+const averagePopulation = document.querySelector('.average-population');
+const totalPopulation = document.querySelector('.total-population');
+const newPopulation = [...document.querySelectorAll('.population')];
+let totalPopulationResult = 0;
+
+for (const onePopulation of newPopulation) {
+  totalPopulationResult += Number(onePopulation.innerText.split(',').join(''));
+}
+
+const newTotalPopulationResult = String(totalPopulationResult).split('');
+const resultTotal = [];
+
+while (newTotalPopulationResult.length) {
+  resultTotal.unshift(newTotalPopulationResult.splice(-3).join(''));
+}
+
+const averagePopulationResult = Math.round(
+  totalPopulationResult / population.length,
+);
+const newAveragePopulationResul = String(averagePopulationResult).split('');
+const resultAverage = [];
+
+while (newAveragePopulationResul.length) {
+  resultAverage.unshift(newAveragePopulationResul.splice(-3).join(''));
+}
+
+totalPopulation.innerText = resultTotal.join(',');
+averagePopulation.innerText = resultAverage.join(',');