^ 1       ^ 2                                | 3  ^ 4  ^
^ 5       ^ 6                                | 7  ^ 8  ^
^   Somme | ~~=sum(r0c0:r1c1,r0c3:r1c3)~~            |||
^  Nombre | ~~=count(r0c0:r1c1,r0c3:r1c3)~~          |||