PT Biru Sejahtera produces plastic buckets. The company hopes to produce 430,000 buckets by 2022. Blue buys high-quality plastic granules to produce buckets. Every pound of plastic granules makes two plastic buckets. The company's final inventory target is 35,200 pounds of plastic granules; the initial inventory was 22,500. Count how many pounds of plastic granules will need to be purchased by 2022?