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

### Instruction:
 Macy na Piper walikwenda kwenye mazoezi ya kugonga mpira. Kila alama inakupa mpira 15. Macy alitumia alama 11 na Piper alitumia alama 17. Macy aligonga mpira mara 50. Piper aligonga mpira mara 55. Jumla ya mpira wangegonga ni wangapi?


### Response:
 Macy alitumia alama 11 ambazo ni sawa na mpira 11 * 15 = <<11*15=165>>165.
Piper alitumia alama 17 ambazo ni sawa na mpira 17 * 15 = <<17*15=255>>255.
Pamoja, Macy na Piper walipokea mpira 165 + 255 = <<165+255=420>>420.
Pamoja, Macy na Piper walikosa mpira 420 - 50 + 55 = <<420-50+55=425>>425.