Shyam and Sanjana have bookshelves of the same size and holding books of the same sizes. Shyam's shelf is $\large\frac{1}{2}$ full and Sanjana's shelf is $\large\frac{1}{3}$ full. If 63 more books of the same size are distributed among them, then they can fill their shelves completely. How many books does Sanjana have today?