 
<translate> A cikin makonni 60, Monica ta tara 15 * 60 = $900. Ta maimaita wannan tsari sau 5, wanda ke nufin a duka ta tattara 5 * 900 = $ 4500. Saboda haka, amsar ita ce 4500. <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. 