请指点: Company    name     amount  currency       
   A        liu      100      HKD
            li       200      RMB
            wang     200      HKD
           --------------------------
       sub total     300      HKD
                     200      RMB   B        chen     300      HKD
            liu      500      RMB
            wang     300      RMB
           --------------------------
       sub total     300      HKD
                     800      RMB