One way Anova question

I'm in desperate need of help, I need to know how to use this output from SPSS to get the answer : F2,87 = 17.2, p<0.001  I have searched google for over 5 hours with no luck. Please could someone spare the time to post a very simple explanation how to do this?

From this 1 way Anova output from SPSS

          Sum of Squares    df    Mean Square    F    Sig.
Between Groups    17.622        2    8.811        18.108    0.000
Within Groups    42.333        87    0.487       
Total        59.956        89           


What exactly do I need to get his result:

F2,87 = 17.2, p<0.001?

I have put some links below in case the text gets corrupted.

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Thank you for reading my desperate cry for help!

Mods - Popcorn or anyone else, can someone please delete this thread here? I just heard some of my teacher lurk at 4chan!!!!

thank you!!