In a four$-$step process with yields of $0\mathrm{.}10$ in step $1,0\mathrm{.}30$ in step $2,0\mathrm{.}50$ in step $3$ and $0\mathrm{.}95$ in step $4,$ the Flow Rate is $8334$ units. Approximately, how many good units come from that flow rate., $?$ Assume a stable process.

a$)$ Process Yield $($reliability$)=$ multiplicative yield of all steps in a process.

b$)$ Yield $($reliability$)=$ # good units $/$ # of start units