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

### Instruction:
Megan is an actress. She was the lead actress in 80% of her work. In total, Megan participated in 100 plays. How many times Megan was not the lead actress?

### Response:
 Ikiwa Megan alikuwa mwigizaji mkuu katika 80% ya kazi yake, hakuwa mwigizaji mkuu katika 20% ya kazi yake.
Asilimia moja ni sawa na 1/100, hivyo katika 20/100 = 1/5 ya tamthilia ambazo Megan alishiriki, hakuwa mwigizaji mkuu.
Hii inamaanisha Megan hakuwa mwigizaji mkuu katika 1/5 * 100 = <<1/5*100=20>>20 tamthilia.