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

### Instruction:
Rene has three times as many dolls as her sister, while her sister has two more dolls than their grandmother. If their grandmother has 50 dolls, how many dolls do they have altogether?

### Response:
 Ikiwa bibi yao ana vitu vya kuchezea 50, dada yake Rene, ambaye ana vitu viwili zaidi ya bibi yao, ana vitu vya kuchezea 50+2 = <<50+2=52>>52.
Kwa kuwa Rene ana mara tatu ya idadi ya vitu vya kuchezea kama dada yake, yeye ana vitu vya kuchezea 52*3 = <<52*3=156>>156.
Kwa jumla, wana vitu vya kuchezea 50+52+156 = <<50+52+156=258>>258.