1 Billion = 10^12 = 1 000 000 000 000
$${\mathtt{1}}\%{\mathtt{\,\times\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{12}}} = {\mathtt{20\,000\,000\,000}}$$
Gruß "radix" (Dieter)
dir ist in deiner Antwort ein Tippfehler unterlaufen (das passiert miir gelegentlich auch !)
$${\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{12}}}{\mathtt{\,\times\,}}{\mathtt{1}}\% = {\mathtt{20\,000\,000\,000}}$$
$${\mathtt{2\,000\,000\,000\,000}}{\mathtt{\,\times\,}}{\mathtt{1}}\% = {\mathtt{20\,000\,000\,000}}$$
Gruß Dieter ("radix")