Answer:
480 - don't need to simplify
Step-by-step explanation:
[tex]5 \sqrt{24} \: \times 4 \sqrt{24} [/tex]
[tex]5 \times 4 \times \sqrt{24 } \: \times \sqrt{24} [/tex]
=
[tex]20 \times 24[/tex]
[tex] = 480[/tex]