$((($ please show your steps with the drawings if possible$)))$

Using the Decomposition method, find the system reliability if:

$R_1=0\mathrm{.}9,R_2=0\mathrm{.}8,R_3=0\mathrm{.}95,R_4=0\mathrm{.}75,R_5=0\mathrm{.}85,R_6=0\mathrm{.}99,R_7=0\mathrm{.}97,R_8=0\mathrm{.}89$

Outputs