о) 2⋅1;

о) $$2\frac{2}{25} \cdot 1\frac{9}{16} = \frac{52}{25} \cdot \frac{25}{16} = \frac{52 \cdot 25}{25 \cdot 16} = \frac{52}{16} = \frac{13}{4} = 3\frac{1}{4}$$

Ответ: $$3\frac{1}{4}$$