[SeaHawkFan]

And what calculator did he use? Are you saying the TI-85 is wrong? This is real simple math problem of a/b, where a=48 and b= 2(9+3). 48/24=2. THERE IS NO OTHER CORRECT SOLUTION.

[BushCountry]

Actually I think age is the problem. The TI-85 is over 15 years old. The expression is poorly written and can be two calculated two different ways, using two different interpretations of the rules. Modern rules result 288 and old school rules result 2.