Step-by-step explanation:
[tex] \frac{1 \: part}{5 \: oz \: scrap} \times \frac{16 \: oz}{1 \: pound} \times \frac{2000 \: pounds}{1 \: ton} = 6400 \: parts \: per \: ton \: scrap[/tex]
[tex]6400 \frac{parts}{ton \: scrap} \times 1000 \: ton \: scrap \: = 6 \: 400 \: 000 \: parts [/tex]