What is the execution time of this sequence on a $7-$stage pipeline with a $2-$cycle

instruction latency for non$-$branch instructions, but a $5-$cycle branch instruction latency? Assume the branch is not taken, so the DIV is the next instruction executed

after it$.$

BNE r$4,$ #$0,$ r$5$ PC $<-$ r$4$ if r$5$ is not equal to r$5$

DIV r$2,$ r$1,$ r$7$ r$2<-$ r$1/$r$7$

ADD r$8,$ r$9,$ r$10$ r$8<-$ r$9+$r$10$

SUB r$5,$ r$2,$ r$9$ r$5<-$ r$2-$r$9$

MUL r$10,$ r$5,$ r$8$ r$10<-$ r$5$ x r$8$