$5$ pts

Consider distributing a file of $F=15$ Gbits to $N=100$ peers. The server has an upload rate of $u_s=30Mbps,$ and each peer has a download rate of $d_i=2Mbps$ and an upload rate of $u=700$ Kbps$.$ Calculate the minimum distribution time for $P2P$ distribution. $($Hint: $D_{c-5}=\{$:max$\{N\frac{F}{u_s},\frac{F}{d_{\text{m}\text{i}\text{n}}}\},D_{P2P}=$max$\{\frac{F}{u_s},\frac{F}{d_{\text{m}\text{i}\text{n}\text{,}}}N\frac{F}{u_s+{\displaystyle \underset{?}{\overset{?}{}}}{u}_i}\}\}$