六分之一加二十四分之一加六十分之一加一百二十分之一加二百一十分之一加三百三十六分之一

1/6+1/24+1/60+1/120+1/210+1/336
=4/24+1/24+1/60+1/120+1/210+1/336
=5/24+1/60+1/120+1/210+1/336
=25/120+2/120+1/120+1/210+1/336
=27/120+1/120+1/210+1/336
=28/120+1/210+1/336
=7/30+1/210+1/336
=49/210+1/210+1/336
=50/210+1/336
=5/21+1/336
=80/336+1/336
=81/336
=27/112
再问： 能不能简便一点