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

### Instruction:
Nicole collected 400 Pokemon cards. Cindy collected twice as many, and Rex collected half of Nicole and Cindy's combined total. If Rex divided his card equally among himself and his three younger siblings, how many cards does Rex have left?

### Response:
 Cindy ana kadi mara mbili zaidi ya Nicole, hivyo ana kadi 400*2 = <<400*2=800>>800.
Nicole na Cindy wana jumla ya kadi 800+400 = <<800+400=1200>>1200.
Rex ana kadi 1200/2 = <<1200/2=600>>600.
Rex amebakiwa na kadi 600/(3+1=4) = <<600/4=150>>150.