Show Summary and add new Row(s)

hi guys

in my app, need to add some data, and calculate sum of some cell. the user insert new data and again calculate sum. 

in level 1 no problem, when user add new data (New Row) must be insert after Summary Row but add this add upper summary :-|

see the picture:

row 1 insert. some data add with a button, then by click on an other button, Summary row add and work perfectly.

now, user can add new data and must add below, but Row 2 insert up.