现有数值如下:-65,72,-46,83,-86,-4,159,109,-60,-68,-34,-5,118,131,75,2,-38,35,54,103,74,-102,7,-9,-28,-12,-159,-95,-8,-124,-107,-19,100,-51,-12,-77,23,14,-196,61,154,46,-182,-25,-140,-5,42,50,-105,63,2,209,13,-64,132,187,26,48,-11,-154,44,-199,-99,-153,18,-141,27,-8,42,-102,111,-279,65,-14,-97,90,-70,-76,115,118,216,-92,-57,80,13,1,192,-45,86,25,12,-72,160,59,39,161,-167,12,-11,121将其转为20行5列的矩阵,对其每行内容求和,筛选出求和列中大于等于50%分位的所有行,则这些行中所有数值的总和是多少?计算过程中所有数据位浮点数,保持2位小数!