The SCHMOLZ + BICKENBACH AG share was listed at CHF 3.53 on 30.09.2013, taking into account the reduction in par value. On 01.10.2013, the shares of the steel group, which were traded from this date without the subscription right for the current capital increase, closed at CHF 1.04. The subscription right alone was listed at CHF 0.44. Answer the following questions.

1. a) Calculate the subscription ratio of the old/new shares.

1:7

2. b) Calculate the theoretical value of a share after the capital increase as at 30.09.2013.

1 old share before capital increase 3.53

7 new shares at an issue price of 0.53 3.71

8 Shares after capital increase 7.24

Theoretical value of a share after the capital increase 0.905

The teacher has provided the answers but did not show how he was able to calculate these results. Can someone show step by step?