 
 <prompt> Joe jiri ike na Derek na Tammy. O jiri ike 23 oge. Derek nweta nchebe nke oge Joe jiri. Tammy jiri ike ịkọ nke nchebe nke oge Derek jiri. Kedu ihe ọ bụla Tammy jiri ike? <response>: ```Derek jụrụ ụgbọala 2 * 23 - 4 = 46 - 4 = 42 isi.
Tammy jụrụ ụgbọala 42 / 3 + 16 = 14 + 16 = 30 isi.

Nke a bụ 30.``` 