A fisherman catches fish and puts them in 15 boxes, leaving 6 fish. There are 20 fish in one box. How many fish has the fisherman caught?
15 20 [OP_MUL] 6 [OP_ADD]
var_a = 15
var_b = 20
var_c = var_a * var_b
var_d = 6
var_e = var_c + var_d
print(int(var_e))