解:原式=(1*2*3*4*5*6)÷(1*2*3*4*5*6)+(5*6*7*8*9*10*11)÷(1*2*3*4*5*6)=1+462=463
(5*6*7*8*9*10*11)÷(1*2*3*4*5*6)可以约分而得到462
(1X2X3X4X5X6+6X7X8X9X10X11)÷(1X2X3X4X5X6)
=(1X2X3X4X5X6)÷(1X2X3X4X5X6)+(6X7X8X9X10X11)÷(1X2X3X4X5X6)
=1+(6X7X8X9X10X11)÷(1X2X3X4X5X6)
=1+(7X8X9X10X11)÷(1X2X3X4X5)
=1+462
=463
=1X2X3X4X5X6÷1X2X3X4X5X6+6X7X8X9X10X11÷1X2X3X4X5X6
=1+7X8X9X10X11÷8X3X5
=1+7X3X2X11÷1
=1+42x11
=463
9702