The number of photons emitted by a monochromatic (single frequency) infrared range finder of power 1 mW and wavelength of 1000 nm, in 0.1 second is x…

The number of photons emitted by a monochromatic (single frequency) infrared range finder of power $\displaystyle 1$ mW and wavelength of $\displaystyle 1000$ nm , in $\displaystyle 0.1$ second is $\displaystyle x \times 10^{13}$. The value of $\displaystyle x$ is \_\_\_\_. (Nearest integer) $$\left(\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}, \mathrm{c}=3.00 \times 10^8 \mathrm{~ms}^{-1}\right) $$