An analyst examines a box plot of a company's weekly sales and identifies the first quartile ($Q_1$) as \12,000$and the third quartile ($Q_3$) as$$20,000$. If Bowley's coefficient of skewness ($S_q$) is calculated to be$-0.25$, what is the median weekly sales ($Q_2$) of the company, and what does the sign of$S_q$ indicate about the distribution's shape?