(16) There are 2011 street lamps numbered $1,2,3, \cdots, 2011$ on the road. To save electricity, 300 of them need to be turned off, but no two adjacent lamps can be turned off at the same time, and the lamps at both ends cannot be turned off. The number of ways to meet these conditions is $\qquad$. (Express using combination notation)
$16 \mathrm{C}_{1710}^{300}$ Hint: The problem is equivalent to inserting 300 dark lamps into 1711 street lamps, so there are $\mathrm{C}_{1710}^{300}$ ways to turn off the lamps.