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

### Instruction:
Simon and Peter have a big stamp collection. Simon collects red stamps and Peter collects white stamps. Simon has 30 red stamps and Peter has 80 white stamps. If the red stamps are then sold for 50 cents each and the white stamps are sold for 20 cents each, what is the difference in the amount of money they make in dollars?

### Response:
 Ili kupata thamani ya jumla ya stempu nyekundu, stempu 30 * senti 50 kila moja = <<30*50=1500>>1500 senti.
Ili kupata thamani ya jumla ya stempu nyeupe, stempu 80 * senti 20 kila moja = <<80*20=1600>>1600 senti.
Tofauti ya senti ni 1600 senti - 1500 senti = <<1600-1500=100>>100 senti.
Senti 100 sawa na dola 1, hivyo tofauti ya dola ni 100 senti / 100 senti/dola = $<<100/100=1>>1.