\( -1 \frac{1}{7} = -\frac{7 \cdot 1 + 1}{7} = -\frac{8}{7} \)
\( 1 \frac{1}{16} = \frac{16 \cdot 1 + 1}{16} = \frac{17}{16} \)
\( -\frac{8}{7} \times \frac{17}{16} = -\frac{8 \times 17}{7 \times 16} \)
\( -\frac{1 \times 17}{7 \times 2} = -\frac{17}{14} \)
\( -\frac{17}{14} = -1 \frac{3}{14} \)
Ответ: -1 \( \frac{3}{14} \)