 
 <prompt> Penn na-eme ihe nkiri n'ime ụbọchị. N'ụbọchị mbu, o jiri $10. N'efu nke ọzọ, o jiri $4 nweta nke ahụ. Kedu ihe o jiri Penn mgbe e nwere 5 ụbọchị? <response>: N'ụbọchị abụọ, Penn gụọ $10 + $4 = $14.
N'ụbọchị atọ, ya gụọ $14 + $4 = $18.
N'ụbọchị anọ, ya gụọ $18 + $4 = $22.
N'ụbọchị ise, ya gụọ $22 + $4 = $26.
Maka ọnụ, Penn gụọ jiri $10 + $14 + $18 + $22 + $26 = $90.

Ọ bụghị ihe ọ bụla.``` 