(1 1/12 + 1 1/4) × 1 19/56 +2 5/8 × 1 3/7 × 1 1/9

[latex]( \frac{13}{12} + \frac{5}{4} )* \frac{75}{56} + \frac{21}{8} * \frac{10}{7} * \frac{10}{9} = ( \frac{13}{12} + \frac{15}{12} )* \frac{75}{56} + \frac{21*10*10}{8*7*9} =\\= \frac{28*75}{12*56} + \frac{2100}{504} = \frac{75}{24}+ \frac{2100}{504} = \frac{1575}{504} + \frac{2100}{504} = \frac{3675}{504} [/latex]