Вычислите самым рациональным

36∙35-35∙34+34∙33-33∙32+32∙31-31∙30+30∙29-29∙28+28∙27-27∙26+26∙25-25∙24 = =35(36-34)+33(34-32)+31(32-30)+29(30-29)+27(28-26)+25(26-24) =
= 35∙2+33∙2+31∙2+29∙2+27∙2+25∙2 = 2(35+25+33+27+31+29) = 
= 2(60+60+60) = 2∙180 = 360