2.04081633e-9 Ich weiß nicht genau, wie ich das e-9 ausrechnen kann...
$${\frac{{\mathtt{2.040\: \!816\: \!33}}}{{{\mathtt{10}}}^{{\mathtt{9}}}}} = {\mathtt{0.000\: \!000\: \!002\: \!040\: \!816\: \!3}}$$
$${{\mathtt{10}}}^{-{\mathtt{9}}} = {\frac{{\mathtt{1}}}{{{\mathtt{10}}}^{{\mathtt{9}}}}}$$