Help me with my math pls

[tex]18 - ( \sqrt[3]{27} )^{3} [/tex]
Answer: -9
[tex]( \sqrt[3]{ - \frac{1}{8} } )^{3} + 3 \frac{3}{4} [/tex]
Answer: 3 5/8.
[tex]5 \sqrt[3]{729} - 24 [/tex]
Answer: 21.
[tex] \frac{1}{4} - 2 \sqrt[3]{ \frac{1}{216} } [/tex]
Answer: 7/12.
[tex]54 + \sqrt[3]{ - 4096} [/tex]
Answer: 38.
[tex]4 \sqrt[3]{8000 } - 6[/tex]
Answer: 74.