C942 Insufficient Memory

A month's interest is equal to his annual income?

Zhou Zi'ang counted with his fingers. His average monthly income was around one million. A year was 12 million, and his monthly interest was 12 million. The annual interest was 144 million.

Zhou Zi'ang was dumbfounded!

How much money would he need to save to have 144 million interest in a year? The interest rate in the bank was 2%