Jin loves carrots! Yesterday she ate $$\frac{7}{9}$$ of her carrots, and today she ate $$\frac{2}{7}$$ of the number of carrots she ate yesterday. She ate 14 carrots today. Yesterday she had started with  carrots. 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Fractions and Percentages->Finding the Base
$14\div\dfrac{2}{7}\div\dfrac{7}{9}=63$ 