Question 470827
{{{((2/3)/(4/7)) * ((4/5)/(3/4)) / ((1/8)/(4/9))=((2/3)*(7/4))*((4/5)*(4/3))/((1/8)*(9/4))=((2*7*cross(4)*4)/(3*cross(4)*5*3))/(9/32)=(56/45)/(9/32)=(56/45)*(32/9)=(56*32)/(45*9)=1792/405}}}