66×(58)6-6\times (5-8)

1
Simplify  585-8  to  3-3.
66×36-6\times -3

2
Simplify  6×36\times -3  to  18-18.
6(18)6-(-18)

3
Remove parentheses.
6+186+18

4
Simplify.
2424

Done

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