We have a very specific need with respect to currencies. I'll try to explain it as below 

1. We are selling imported software Products in India.

2. We import from Europe and US.

3. The suggested price is in USD/Euro

4. We want to give Quote/Invoice in INR

5. We want to automate INR price based on currency conversion rates everyday.

for e.g. Product 1 = 3000 USD but we want to give Estimate in INR based on USD x That day Rate

How to achieve this ?