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

### Instruction:
Sheila, Purity, and Rose want to rent a house. Sheila has offered to pay five times Purity’s share of the rent. Rose can only afford thrice what Purity pays. If Rose’s share is $1,800, what is the total house rent?

### Response:
Purity will pay a third of Rose's share, so 1800/3 = <<1800/3=600>>600 dollars
Sheila has offered to pay five times Purity's share, so Sheila will pay 600*5 = <<600*5=3000>>3000 dollars
Combining everyone’s share of the rent will give a total of 600+3000+1800 = <<600+3000+1800=5400>>5400 dollars
#### 5400