I feel that calculation is an inherent quality. Even a person who had not been to school can calculate very accurately.Let me tell you something that I've been observing for a long time.
Here in Hata, whenever I buy something, suppose I have to pay Rs. 46 and I gave the shopkeeper Rs.100 note, what he'll do? He will give me Rs. 4 and say 50 is completed and continues counting by...