Company has 2,000,000 shares of common stock outstanding on December 31, 2018. An additional 100,000 shares are issued on April 1, 2019, and 240,000 more on September1. On October 1, 2019, company issued 3,000,000 of 9% convertible bonds. Each 1,000 bond is convertible into 40 shares of common stock. No bonds have been converted. Assume the bonds are dilutive. The number of shares to be used in computing basic earnings per share and dilutive earnings per share on December 31, 2019 is?

The answer is 2,155,000 and 2,185,000 but wasn't sure how to get it