Something

\documentclass[12pt,a4paper]{article}

\usepackage[ansinew]{inputenc}
\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage[dvips]{graphicx}
\usepackage[danish]{betababel}
\usepackage{lastpage}

\linespread{1.5}

\lhead{Hjørring Gymnasium\\ Kasper Simonsen}
\rhead{\today \\ 3c23}
\lfoot{}
\cfoot{\thepage/\pageref{LastPage}}
\rfoot{}

\renewcommand{\headrulewidth}{0.4pt}