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

### Instruction:
A building has four floors with ten rooms each. Legacy has to clean each room, and it takes her 6 hours to clean one room. If she earns $15 per hour of work, calculate the total amount of money she makes from cleaning all the floors in the building.

### Response:
 Kwa kuwa jengo lina sakafu nne zenye vyumba kumi kila moja, idadi jumla ya vyumba katika jengo hilo ni 4*10 = <<4*10=40>>40.
Ikiwa inamchukua Legacy masaa 6 kusafisha kila chumba, atachukua masaa 6*40 = <<6*40=240>>240 kusafisha vyumba vyote.
Kwa kuwa anapata $15 kwa saa ya kazi, atapata $15*240 = $<<15*240=3600>>3600 baada ya kusafisha vyumba vyote.