Four-month-old Ekagrah Rohan Murty has become a millionaire even before learning how to walk on two legs as his grandfather and billionaire NR Narayana Murthy has gifted him 15 lakh Infosys shares worth over Rs 240 crore. Regulatory filings show that 77-year-old Murthy gifted 15 lakh shares or 0.04% stake to his grandson in an off-market transaction last Friday…