5

$\frac{5}{7}×\frac{8}{9}=$?
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Multiply $\frac{5}{7}$ by $\frac{8}{9}$.

$\frac{5\cdot 8}{7\cdot 9}$

Multiply $5$ by $8$.

$\frac{40}{7\cdot 9}$

Multiply $7$ by $9$.

$\frac{40}{63}$

The result can be shown in multiple forms.

Exact Form:

$\frac{40}{63}$