Well, if you all just want to read and not answer then here is something to think about:

the drake equation: c-p from wiki

R∗, the average rate of star formations, in our galaxy,

fp, the fraction of formed stars that have planets,

ne for stars that have planets, the average number of planets that can potentially support life,

fl, the fraction of those planets that actually develop life,

fi, the fraction of planets bearing life on which intelligent, civilized life, has developed,

fc, the fraction of these civilizations that have developed communications, i.e., technologies that release detectable signs into space, and

L, the length of time over which such civilizations release detectable signals,

for a combined expression of:

N = R ∗ ⋅ f p ⋅ n e ⋅ f l ⋅ f i ⋅ f c ⋅ L {\displaystyle N=R_{*}\cdot f_{\mathrm {p} }\cdot n_{\mathrm {e} }\cdot f_{\mathrm {l} }\cdot f_{\mathrm {i} }\cdot f_{\mathrm {c} }\cdot L} {\displaystyle N=R_{*}\cdot f_{\mathrm {p} }\cdot n_{\mathrm {e} }\cdot f_{\mathrm {l} }\cdot f_{\mathrm {i} }\cdot f_{\mathrm {c} }\cdot L}