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

### Instruction:
Merry had 50 boxes of apples on Saturday and 25 boxes on Sunday. There were 10 apples in each box. If she sold a total of 720 apples on Saturday and Sunday, how many boxes of apples are left?

### Response:
 Merry alikuwa na masanduku 50 ya matofaa Jumamosi na masanduku 25 Jumapili.
Kila sanduku lilikuwa na matofaa 10 hivyo ni jumla ya matofaa 50*10 = <<50*10=500>>500 Jumamosi
na 25*10 = <<25*10=250>>250 Jumapili
Aliuza jumla ya matofaa 720 Jumamosi na Jumapili hivyo ni 500+250 = <<500+250=750>>750 matofaa yaliyouzwa
Alianza na masanduku 50+25 = <<50+25=75>>75 ya matofaa
Aliuza matofaa 750 na alianza na masanduku 75 hivyo inabaki 75-750 = <<75-750=-675>>-675 masanduku ya matofaa