If $ a◆b$ means $(a\times b)+b$ , then $（2◆3）◆4$ has the value． 
Overseas Competition->Knowledge Point->Calculation Modules->Operations with New Definition->Operating Directly
If $a◆b$~ represents $(a\times b)+b$ , $2◆3=(2\times3)+3=9,9◆4=(9\times4)+4=40$ . 