 
<translate> Andrea zụtara 45 / 3 = 15 rhinestones. Ọ chọtara 45 / 5 = 9 rhinestones n'ihe onwunwe ya. N'ihi ya, Andrea ka chọrọ nkume rhinestones 45 - 15 - 9 = 21. Ya mere, azịza ya bụ 21. <eng> Andrea bought 45 / 3 = 15 rhinestones. She found 45 / 5 = 9 rhinestones in her supplies. Thus, Andrea still needs 45 - 15 - 9 = 21 rhinestones. So, the answer is 21. 