Answer= 170

the quotient will be 0 for the numbers from 1 to 17. for 18 the quotient will differ. Similarly for 36, 37. similarly for 54,55,56.

The number of numbers not satisfying this condition will go on increasing as shown 1,2 3........18. after 18 no number will have the same quotient with 18 and 19. So the number of numbers satisfying the condition will be (19*18-1)-(18*(18+1)/2)=170. the last number satisfying the condition will be 323