One barangay in a certain province was lock downed by a barangay captain because the nearby barangay have number of Covid 19 positive cases. Mang Ulding decided to put up vegetable graden so that in few months time of quarantine they have fresh vegetable for his family's consumption He will build fence for the garden. Mang Ulding needs 500 bamboo poles. he buys 120 pieces from Mang Carling. and 75 pieces from Mang Harry. How many more bamboo poles Mang Ulding need?​