Ответ:
\(35\cdot18=630\); \(279\cdot42=11\,718\); \(74\cdot953=70\,522\); \(506\cdot125=63\,250\); \(817\cdot304=248\,368\); \(608\cdot207=125\,856\); \(123\,450\cdot7\,800=962\,910\,000\); \(69\,080\cdot10\,500=725\,340\,000\).
\(35\cdot18=630\); \(279\cdot42=11\,718\); \(74\cdot953=70\,522\); \(506\cdot125=63\,250\); \(817\cdot304=248\,368\); \(608\cdot207=125\,856\); \(123\,450\cdot7\,800=962\,910\,000\); \(69\,080\cdot10\,500=725\,340\,000\).