Thank you geno, but this was incorrect. Sorry!!!!!!
Thepoint$(x,y)$satisfies$x<y$ifandonlyifitbelongstotheshadedtriangleboundedbythelines$x=y$,$y=1$,and$x=0$,theareaofwhichis1/2.Theratiooftheareaofthetriangletotheareaoftherectangleis$1/24=18$.[asy]draw((−1,0)−−(5,0),Arrow);draw((0,−1)−−(0,2),Arrow);for(inti=1;i<5;++i)draw((i,−0.3)−−(i,0.3));fill((0,0)−−(0,1)−−(1,1)−−cycle,gray(0.7));draw((−0.3,1)−−(0.3,1));draw((4,0)−−(4,1)−−(0,1),linewidth(0.7));draw((−0.5,−0.5)−−(1.8,1.8),dashed);[/asy]
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