Calculate: $$\frac{1}{4}\times \frac{5}{6}+\frac{3}{7}\times \frac{7}{8}=$$． 
Overseas Competition->Knowledge Point->Calculation Modules->Fractions->Operations of Fractions
$$\frac{1}{4}\times \frac{5}{6}+\frac{3}{7}\times \frac{7}{8}$$=$$\frac{5}{24}+\frac{3}{8}$$=$$\frac{5}{24}+\frac{9}{24}$$=$$\frac{14}{24}$$=$$\frac{7}{12}$$ 