5x6x7x8x9分之(禅扮1x2x3x4x5+5x6x7x8x9 )裂袭吵=5x6x7x8x9分之1x2x3x4x5+1=7x8x9分之1+1=1又504分之肆侍1
1*2*3*4*5/5*6*7*8*9 + 5*6*7*8*9/5*6*7*8*9=1/2*7*9 +1=127/126
1+126分之1
1/7x2x9+1