A bank has assets of $172 billion. After applying the regulator stipulated risk weightings, the institution has total risk-weighted assets of $122.5...

A bank has assets of $172 billion. After applying the regulator stipulated risk weightings, the institution has total risk-weighted assets of $122.5 billion.

After considering the total capital requirement, the remaining $____ could be raised as liabilities (assume Basel II).

The correct answer is 162,200. I want to know how to calculate this question.

Thank you