$$- \frac{ 45 }{ 7 } (- \frac{ 14 }{ 11 } )/( \frac{ 28 }{ 33 } )( \frac{ 100 }{ 33 } )/(- \frac{ 25 }{ 44 } )$$
$-\frac{360}{7}\approx -51.428571429$
$$\frac{\frac{\frac{-45\left(-14\right)}{7\times 11}}{\frac{28}{33}}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{\frac{630}{77}}{\frac{28}{33}}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{\frac{90}{11}}{\frac{28}{33}}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{90}{11}\times \frac{33}{28}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{90\times 33}{11\times 28}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{2970}{308}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{135}{14}\times \frac{100}{33}}{-\frac{25}{44}}$$
$$\frac{\frac{135\times 100}{14\times 33}}{-\frac{25}{44}}$$
$$\frac{\frac{13500}{462}}{-\frac{25}{44}}$$
$$\frac{\frac{2250}{77}}{-\frac{25}{44}}$$
$$\frac{2250}{77}\left(-\frac{44}{25}\right)$$
$$\frac{2250\left(-44\right)}{77\times 25}$$
$$\frac{-99000}{1925}$$
$$-\frac{360}{7}$$
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$-\frac{360}{7} = -51\frac{3}{7} = -51.42857142857143$