Try..........
1] Count bill/invoice no J6, formula copy down :
=SUMPRODUCT((B$6:B$12=I6)*(LEFT(C$6:C$12,2)="10"))&"/"&SUMPRODUCT((B$6:B$12=I6)*(LEFT(C$6:C$12,2)="70"))
2] Bill no amount M6, formula copy down :
=SUMPRODUCT(($B$6:$B$12=$I6)*(LEFT($C$6:$C$12,2)=LEFT(L$6,2)),$E$6:$E$12)
3] Invoice amount O6, copy / paste formula from M6 and copy down.
Regards