(1/2+1/3+1/5+1/7+1/11+1/13)*385
=(1/2+1/3+1/13)*385+(1/5+1/7+1/1/11)*385
=192/2+128/3+29*8/13+77+55+35
=516+1/2+1/3+8/13
=517+35/78
所以整数部分是517
(1/2+1/3+1/5+1/7+1/11+1/13)*385
=(1/2+1/3+1/13)*385+(1/5+1/7+1/1/11)*385
=192/2+128/3+29*8/13+77+55+35
=516+1/2+1/3+8/13
=517+35/78
所以整数部分是517