62. Упростите выражение: 1) $$\frac{7}{9}p \cdot \frac{4}{k}$$; 2) $$1 \frac{5}{7}x \cdot \frac{5}{12}y$$; 3) $$2 \frac{5}{8}x \cdot 2y \cdot 2 \frac{2}{25}$$.

1) $$\frac{7}{9}p \cdot \frac{4}{k} = \frac{7 \cdot 4}{9 \cdot k}p = \frac{28p}{9k}$$ 2) $$1 \frac{5}{7}x \cdot \frac{5}{12}y = \frac{12}{7}x \cdot \frac{5}{12}y = \frac{12 \cdot 5}{7 \cdot 12}xy = \frac{5}{7}xy$$ 3) $$2 \frac{5}{8}x \cdot 2y \cdot 2 \frac{2}{25} = \frac{21}{8}x \cdot 2y \cdot \frac{52}{25} = \frac{21 \cdot 2 \cdot 52}{8 \cdot 25}xy = \frac{21 \cdot 52}{4 \cdot 25}xy = \frac{21 \cdot 13}{25}xy = \frac{273}{25}xy = 10 \frac{23}{25}xy$$