Swastik saves 20% of his income while spends the remaining amount on food, rent, education and shoping. 15% of the income is spent on food, while Rs. 12,800 is spent on rent, ₹32,000 on education and ₹7,200 on shopping. The amount spent on shopping is 11.25% of the total expenditure. How much money (in Rs.) is spent on food?