An assembly line has $24$ work elements that total $360$ minutes and the desired cycle time has been

computed to be $115$ minutes$/$unit$.$ The work elements are loaded into workstations and the

minimum number of workstations are used. The average workstation time is $90$ minutes and the

longest workstation time is $98$ minutes, what is the efficiency of this assembly line?

Note: Answer to in decimal format $(3$ decimal places$)$ like $0\mathrm{.}678$ NOT $67\mathrm{.}8\%.$