There is a nonagon-shaped piece of land. If you divide a land by drawing a line from one vertex to a non-neighboring vertex, how many lands is it divided into?
9 3 [OP_SUB] 1 [OP_ADD]
var_a = 9
var_b = 3
var_c = var_a - var_b
var_d = 1
var_e = var_c + var_d
print(int(var_e))