Some versions of UNIX have been found unable to process pseudo-complex 
mathematical notations. Please do try this to check the validity of your 
system.  
Depending on whether or not the command given here returns a valid answer, you
should consult your IS department for a workaround.

echo '82 43/25 43+65P80P82P73P76P32P70P79P79P76P10P' | dc

Thanks.

Regards,
Tomki