In May 2010, Canadian Natural Resources Limited, one of Canada's largest natural gas producers, completed a 2-for-1

Question:

In May 2010, Canadian Natural Resources Limited, one of Canada's largest natural gas producers, completed a 2-for-1 stock split. Immediately before the split, Canadian Natural had 542,327,000 common shares trading at $70.78 per share.
(a) How many shares did it have after the stock split?
(b) What was the most likely price of the shares after the stock split?
(c) How would Canadian Natural record this stock split?