Earnings Per Share

At 30 September 20X2 the trial balance of Cavern Co includes the following balances:
$’000
Equity shares of 20c each 50,000
Share premium 15,000
Cavern Co has accounted for a fully subscribed rights issue of equity shares made on
1 April 20X2 of one new share for every four in issue at 42 cents each. This was the only
share issue made during the year.
Using the drag and drop options below, show the balances on the share capital and share
premium accounts at 30 September 20X1?

Balance 30 September X2 (250m shares) 50,000 15,000
Rights issue:
Share capital (50m ? 20c) (10,000)
Share premium (50m ? 22c) – (11,000)
Balance 30 September X1 (200m shares) 40,000 4,000

dear sir,here,(50m ? 20c) 50m quantity where is it brought from?