Dissasemble the following instruction $($change it from machine code to assembly$)$: $0$x$21490$a$3$e$.$ Rules: All answers must be formatted as valid MIPS assembly.

Immediates must be written in decimal.

Register names must be preceded with $$.$ Registers may be referred to by their name $($e$.$g$.$ $s$0)$ or their number $($e$.$g$.$ $$12).$