Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
Lucy lost one-third of her money. She then spent one-fourth of the remainder, and only left with $15. How much money did Lucy have at the beginning?

### Response:
 ลูซี่มีเงิน $60 เพราะ 15 x 4 = <<15*4=60>>60
ลูซี่มีเงิน $90 เพราะ 60 x 1.5 = <<60*1.5=90>>90
ลูซี่สูญเสียเงิน $30 เพราะ 90 - 60 = <<90-60=30>>30