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

### Instruction:
Lilah's family gallery has 400 photos. On a two-day trip to the Grand Canyon, they took half as many photos they have in the family's gallery on the first day and 120 more photos than they took on the first day on the second day. If they added all these photos to the family gallery, calculate the total number of photos in the gallery.

### Response:
 Siku yao ya kwanza Grand Canyon, familia ilichukua nusu ya picha walizo nazo katika galeria, maana yake walichukua 1/2*400 = <<400/2=200>>200 picha.
Idadi jumla ya picha ikiwa wataziweka picha walizochukua siku ya pili ni 400+200= <<400+200=600>>600.
Hata hivyo, siku ya pili, walichukua picha 120 zaidi ya walizochukua siku ya kwanza, jumla ya picha 200+120=<<320=320>>320.
Ikiwa wataziweka picha hizi katika galeria, idadi ya picha itakuwa 600+320= <<600+320=920>>920.