$$A=- \frac{ 3 }{ 8 } \times \frac{ 9 }{ 8 }$$
$A=-\frac{27}{64}=-0.421875$
$$A=\frac{-3\times 9}{8\times 8}$$
$$A=\frac{-27}{64}$$
$$A=-\frac{27}{64}$$
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$A≔-\frac{27}{64}$
