Explain the EUI$-64$ process

What is the MAC address for the eui$-64$ address FE$80$::$290$:$2$BFF:FEDB:E$1$A$7?$

Given the mac address $00$D$0.$FF$39\mathrm{.}4$CC$3,$ derive the EUI$-64$ Link$-$Local address

Program a Router's $2$ interfaces with EUI$-64$ Link$-$Local addresses and connect them to a switch and end device

How far can a ping travel? Demonstrate in Simulation mode and explain your results