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

### Instruction:
At peak season, 6 packs of tuna fish are sold per hour, while in a low season 4 tuna packs are sold per hour. If each tuna pack is sold at $60, How much more money is made in a day during a high season than a low season if the fish are sold for 15 hours?

### Response:
 Tofauti katika idadi ya pakiti za tuna zilizouzwa kwa saa kati ya msimu wa juu na msimu wa chini ni 6 pakiti - 4 pakiti = <<6-4=2>>2 pakiti.
Ikiwa kila pakiti ya tuna inauzwa kwa $60, tofauti ya mapato kwa saa kati ya msimu wa juu na msimu wa chini ni $60 * 2 = $<<60*2=120>>120.
Tofauti ya mapato yaliyopatikana baada ya masaa 15 ya kuuza samaki ni $120 * 15 = $<<120*15=1800>>1800.