 
<translate> N'ime izu 60, Monica chịkọtara 15 * 60 = $900. O meghachiri usoro a ugboro ise, nke pụtara na n'ozuzu ya, o nwetara 5 * 900 = $4500. Ya mere, azịza ya bụ 4,500. <eng> During 60 weeks, Monica collected 15 * 60 = $900. She repeated this process 5 times, which means in total she collected 5 * 900 = $4500.
Thus, the answer is 4500. 