$$(- \frac{ 7 }{ 11 } \times 2 \frac{ 5 }{ 7 } ) \times (2 \frac{ 3 }{ 5 } -3 \frac{ 4 }{ 7 } )$$
$\frac{646}{385}\approx 1.677922078$
$$-\frac{7}{11}\times \frac{14+5}{7}\left(\frac{2\times 5+3}{5}-\frac{3\times 7+4}{7}\right)$$
$$-\frac{7}{11}\times \frac{19}{7}\left(\frac{2\times 5+3}{5}-\frac{3\times 7+4}{7}\right)$$
$$\frac{-7\times 19}{11\times 7}\left(\frac{2\times 5+3}{5}-\frac{3\times 7+4}{7}\right)$$
$$\frac{-133}{77}\left(\frac{2\times 5+3}{5}-\frac{3\times 7+4}{7}\right)$$
$$-\frac{19}{11}\left(\frac{2\times 5+3}{5}-\frac{3\times 7+4}{7}\right)$$
$$-\frac{19}{11}\left(\frac{10+3}{5}-\frac{3\times 7+4}{7}\right)$$
$$-\frac{19}{11}\left(\frac{13}{5}-\frac{3\times 7+4}{7}\right)$$
$$-\frac{19}{11}\left(\frac{13}{5}-\frac{21+4}{7}\right)$$
$$-\frac{19}{11}\left(\frac{13}{5}-\frac{25}{7}\right)$$
$$-\frac{19}{11}\left(\frac{91}{35}-\frac{125}{35}\right)$$
$$-\frac{19}{11}\times \frac{91-125}{35}$$
$$-\frac{19}{11}\left(-\frac{34}{35}\right)$$
$$\frac{-19\left(-34\right)}{11\times 35}$$
$$\frac{646}{385}$$
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$\frac{2 \cdot 17 \cdot 19}{5 \cdot 7 \cdot 11} = 1\frac{261}{385} = 1.6779220779220778$
