What will come in place of the question mark (?) in the following questions?

450-60% of 225=?- 8³

Find the value of $$\left( 17 \times 10 \right) \times \left\{ {8}\div{8} \times \left( \frac{19 - 12}{7} \right) \right\}$$​​

Find the value of $$\left( 90\div 5 \right) \times \left\{ \frac{78}{6} + \frac{12}{1} \times (8 - 7) \right\}$$​​

Find the value of  $$(25 \times 13) \times \left\{ {2}\div{2} \times \frac{(16 - 13)}{3} \right\}$$​​