If a bunch of Indian corporates and their financial pundits had their way, the basic mathematics taught at high schools across the world would need an urgent upgrade, given the rate at which the companies are getting key subsidiaries in their businesses listed of late. Take the case of the Bengaluru-based Biocon, which listed its contract research subsidiary Syngene; Gujarat Fluorochemicals, which listed wind power subsidiary Inox Wind; or Gateway Distriparks, which listed its cold-chain logistics arm Snowman Logistics.