Ответ:\(84 \cdot \frac{1}{6}=84:6=14\).\(57 \cdot \frac{1}{19}=57:19=3\).\(112 \cdot \frac{7}{16}=7\cdot(112:16)=7\cdot7=49\).\(156 \cdot \frac{8}{13}=8\cdot(156:13)=8\cdot12=96\).Ответ: 14; 3; 49; 96.