how to display the product names & values of a particular Childs

[san]

hi all,

my requirment is i have a parent under that childs has to display, fot that childs what are the products has to display & for products values has to display.AT THE TOP  OF THE PARENT, FOR EACH PRODUCTS NAME ANDTHE VALUES HAS TO BE SUM UP & DISPLAY
               
                          (THE HIRARCY IS THE BELLOW)




(at the top of parent ,childs products name & sum has to be display that abc=30(i,e 10+10+10), def=15(i,e 5+5+5), ghi=60(i,e 20+20+20)

   

abc(i,e product name)=30(i,e 10+10+10), def(i,e product name)=15(i,e 5+5+5), ghi(i,e product name)=60(i,e 20+20+20)

INDIA-(PARENT)


Delhi-(child)              abc-( i,e Childs PRODUCT)                10(Values of product)
                             def                                   5
                             ghi                                  20


Chennai - (Child)         abc-(products)                10
                               def                                  5
                               ghi                                20


goa- (child)                 abc-(products)                10
                                def                                  5
                                ghi                                20          

plz... see above the parent(INDIA) abc=30(i,e 10+10+10), def=15(i,e 5+5+5), ghi=60(i,e 20+20+20)


Thanks in advance
san