 
 <prompt> O le mu iye 20% sii pe owo ti o ni fun iPhone cases ti o ba ti wo ounjẹ meji meji. Ti o ba fi $500 lati wo 18 units, kini iye ti o ti wo? <response>: ```Ti o ba wo 18 ọkọ, aaye ti o dara julọ si 100% - 20% = 80%
Ti 80% jẹ $500, nigba ti o jẹ 100% jẹ 100%/80% * $500 = $625

Iwe iroyin: 625.``` 