\( \dfrac{\left(9-7\right)\left(25+\left(-24\right)\right)}{\dfrac{\left(-50\right)+51}{\dfrac{2}{2}}}*\dfrac{\dfrac{2}{2}*\dfrac{\left(-80\right)}{2}}{\left(\left(-7\right)+8\right)\dfrac{\left(-3\right)}{3}} \)