please ask specific doubts, please ask one doubt in one query. We can clear doubts on this platform we cannot teach whole concept here in writing. thanks for understanding our problem.
face value of debentures who opted for preference shares 1,94,200 — Redemption value 194200 + 2% premium is Rs 1,98,084 
now price of one pref share to be given is 105 so number of preference shares to be given 198084 / 105 is 1886.52 now face value will be 1886.52 X 100 = 188652
i know pref shares wont be issued in decimals , but it is nearest correct answer and difference can be adjusted in cash