=(1-6)X(1-15)X(1-27/2)X(1-63/5)X(1-4)X(1-27/7)X(1-15/4)X(1-11/3)=5X14X(1-27/2)X(1-63/5)X3X(1-27/7)X(1-15/4)X(1-11/3)=5X(1-63/5)X2X(1-27/2)X7X(1-27/7)X3X(1-11/3)X(1-15/4)=(-58)X(-25)X(-20)X(-8)X(1-15/4)=(-58)X(-25)X(-20)X22=-63800