The number of zebras in the national park is currently 725. This year, 419 were born and 263 died or were hundred. Find how many zebras there were last year.
725 419 [OP_SUB] 263 [OP_ADD]
var_a = 725
var_b = 419
var_c = var_a - var_b
var_d = 263
var_e = var_c + var_d
print(int(var_e))