The petrol prices shot up by 7% as a result of the hike in the price of crudes. The price of petrol before the hike was Rs.28 per litre. Vawal travels 2400 kilometers every month and his car gives a mileage of 18 kilometers to a litre. Find the increase in the expenditure that Vawal has to incur due to the increase in the price of petrol (to the nearest rupee)?