Answer with good high level explanation please

Assume the $32-$bit variables $x,Y$ and $Z$ correspond to memory addresses $010040004,02004008$ and $0$x$300400$C$,$ respectively. Shown below is a sequence of MIPS true$-$op assembly language instructions to implement the high level language

$\backslash$table$[[$lui$,$$$1,0\backslash$times $1004,],[$lw$,$$$2,4($$$1),$; read X$],[$lui$,$$$1,0$x$200,],[$lw$,$$$3,0\backslash$times $4008($$$1),$; read Y$],[$div$,$$$2,$$$3,$;x$/$Y$],[$mflo$,$$$2,$; put quotient into $$2],[$lui$,$$$1,0\backslash$times $300,],[$sw$,$$$2,0\backslash$times $400$C$\_($$$1),$; store into Z$]]$

a$)$ Show a version of this instruction sequence that contains only true$-$op instructions and works if $x,Y$ and $Z$ are all single$-$precision non$-$zero floating point variables.

b$)$ Show a version of this instruction sequence that contains only true$-$op instructions and works if $x$ and $Z$ are single$-$precision floating point variables, but $Y$ is a non$-$zero integer variable.