计算（2×3×4×5）×（2分之1+3分之1+4分之1+5分之1）的值,要求简算!（2X3X4X5）X（1/2+1/3+1/4+1/5）=（2X3X4X5）X1/2+（2X3X4X5）X1/3+（2X3X4X5）X1/4+（2X3X4X5）=3X4X5+2X4X5+2X3X5+2X3X4=2X5X（3X2+4+3）+24=...