Ms. Anita uses a BS-IV two wheeler petrol scooter, with a mileage of $50 \mathrm{~km} / \mathrm{L}$, to travel $30 \mathrm{~km}$ every day. She exchanges this two wheeler with an electric scooter, which consumes electricity at $0.1 \mathrm{kWh} / 10 \mathrm{~km}$. Assuming the cost of petrol and electricity are fixed at Rs. $90$ per L and Rs. $3.5$ per kWh, respectively, and maintenance cost of both BS-IV two wheeler and electric scooter is negligible, the operational cost saved in a year by Ms. Anita is___________ $\text{(in Rs., in integer).}$
