(* another fiendish session with the spreadsheet ! *)
10 down 20 down 3+5 down -4 down 5 goto a2
a1 * a1 down b1 * b1 down c1 * c1 down d1 * d1 down e1 * e1 goto a3
a1 * a2 down b1 * b2 down c1 * c2 down d1 * d2 down e1 * e2 goto e5
(e1 + e2) + e3 up
(d1 + d2) + d3 up
(c1 + c2) + c3 up
(b1 + b2) + b3 up
(a1 + a2) + a3 up
goto f2 5 enter
(a2 + b2 + c2 + d2 + e2) / (a1 + b1 + c1 + d1 + e1)
home
-10/3 enter (* which should change several cells when it is accepted *)
quit