var website_address =
"https://www.google.ru/search?q=%D0%B6%D0%B0%D1%80%D0%B5%D0%BD%D0%B0%D1%8F+%D0%BA%D0%B0%D1%80%D1%82%D0%BE%D1%88%D0%BA%D0%B0+%D0%BA%D0%B0%D0%BB%D0%BE%D1%80%D0%B8%D0%B8";
var url = Uri.parse(website_address);
var response = await http.get(url);
<div class="IZ6rdc">185 калорий</div>
import 'package:html/parser.dart';
String? parser(String html) {
return parse(html).querySelector('div.IZ6rdc')?.text;
}