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

### Instruction:
 Emir anataka kununua kamusi inayogharimu $5, kitabu cha dinosauri kinachogharimu $11, na kitabu cha mapishi ya watoto kinachogharimu $5. Ameweza kuokoa $19 kutoka kwa posho yake. Anahitaji pesa ngapi zaidi kununua vitabu vyote vitatu?


### Response:
 Jumla ya gharama ya kamusi, kitabu cha dinosauri, na kitabu cha mapishi ya watoto ni $5 + $11 + $5 = $<<5+11+5=21>>21.
Emir anahitaji $21 - $19 = $2.