Who Are You?
The identity of the individual known as Oracle was something that had been eating at Calculator for some time now. He /had/ to know who Oracle was.

He had tried in the past to find the identity of Oracle, but each time he had been unsuccessful. There had been a few times when he had been close, but he had failed each time. He wasn't going to fail this time and he /would/ discover Oracle's identity.

His past attempts had been analyzed and he realized that his approached needed to change. Going directly after Oracle had failed, now it was time to go after her through the people around her. Calculator knew Oracle worked with some female crime fighters in Gotham and they would be her undoing.

He placed a call. He knew just whom to call.