[Newbies] converting a string to a do-able.

[joe biggins]

Hi,

I am a total newby so I am probably missing something obvious.  I am trying
to make a small program where the user can type in simple formula as a text
string and get the answer.  So '3 plus 5' gives the answer 8.  I am having
trouble converting the 'plus' into +.  Is there as asNumber equivalent for
maths symbols or anything like that?

Sorry if this question makes no sense.
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