\ANG{
Berechne:\qquad
(a)\quad $\D\frac{3}{5}\cdot\frac{7}{9}$\qquad
(b)\quad $\D\frac{121}{36}\cdot\frac{27}{22}$\qquad
(c)\quad $\D\frac{1}{289}\cdot\frac{51}{4}$\qquad
(d)\quad $\D\frac{3^{5}}{2048}\cdot\frac{2^{9}}{81}$
}
\LSG{
(a)\quad $\D\frac{7}{15}$\qquad
(b)\quad $\D\frac{33}{8}=4\,\frac{1}{8}$\qquad
(c)\quad $\D\frac{3}{68}$\qquad
(d)\quad $\D\frac{3}{4}$
}
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