 
 <prompt> Darla ga-achọ $4/watt n'okpuru 300 watts n'okpuru, na $150 late fee. Kedu ihe o ga-achọ n'ime? <response>: ```Nọ nke ọzọ iji cheta ego nke electricity: $4/watt * 300 watts = $1200
Mepụta late fee: $1200 + $150 = $1350

Nke aha dị: 1350.``` 