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

### Instruction:
A cook had 300 carrots in a bucket he was using to cook meals for a restaurant. Before lunch, he had used 2/5 of the carrots. By the end of the day, he had chopped and used 3/5 of the remaining carrots. How many carrots were not used that day?

### Response:
 Kabla ya chakula cha mchana, mpishi alitumia 2/5*300 = <<2/5*300=120>>120 karoti.
Idadi ya karoti zilizosalia baada ya mpishi kutumia 2/5 yake ni 300-120 = <<300-120=180>>180.
Mpishi alitumia 3/5*180 = <<3/5*180=108>>108 ya karoti zilizosalia mwishoni mwa siku.
Idadi ya karoti ambazo mpishi hakuzitumia siku hiyo ni 180-108 = <<180-108=72>>72.