Blue SpruceCorporation has the following shareholders' equity on December 31, 2021:

Shareholders' equityShare capital$10 convertible preferred shares,10,000 shares authorized,5000shares issued$560000Common shares, no par value,200,000 shares authorized,80000shares issued1500000Total share capital2060000Retained earnings450000Total shareholders' equity$2510000

If one preferred share is convertible into 10 common shares, how many common shares are issued when640preferred shares are converted?

64

6

640

6400