We plan to plant trees at intervals of 4 kilometers (km) on a straight road of 28 kilometers (km). Find the maximum number of trees you can plant.
28 4 [OP_DIV] 1 [OP_ADD]
var_a = 28
var_b = 4
var_c = var_a / var_b
var_d = 1
var_e = var_c + var_d
print(int(var_e))