what is the square root of 123456789789786456.003
$${\sqrt{{\mathtt{225}}}} = {\mathtt{15}}$$
$${\sqrt{{\mathtt{123\,456\,789\,789\,786\,456.003}}}} = {\mathtt{351\,364\,183.988\: \!332\: \!049\: \!237\: \!642\: \!1}}$$