In an assignment I need to modify a calculator I made in MIPS assembly to handle a large number library. Currently, it can add$/$subtract$,$ multiply and divide decimal integers but I need to make it do so with values up to $32$ digits in length.

How can I structure my main procedure in my code to ask for the input of a $32$ digit value, its operator and another $32$ digit value?

Additionally, how can I store these $32$ digit values? I assume that I would use a string but I$\text{'}$m unsure.