Open loop marketing

   HOW DO YOU MEASURE THE SIZE OF AN ENTIRE ECONOMY ?  let's say i buy a coffee here in Hyderabad for  RS 15  those  RS 15 are factored into the India's GDP  In fact most of what's around you is part of GDP  GDP  is an important gauge of the overall health of an economy . Its stands for gross domestic product simply puts , GDP measures the total valve of all goods and services in a country . that means it measures a lot of stuff  worth  a lot of money.  2019,  GDP  in  India  was at around 2.59 trillion U.S. dollars.  In the  US , the world's biggest economy , It's around $ 19 trillion every year.  HOW DO YOU GET THESE NUMBERS  ?  well  you calculate GDP in a few different ways , but the commonly used this equation goes like      GDP = C+ I+ G+ NX C= CONSUMPTION I= INVESTMENT G= GOVERNMENT SPENDING NX =NET EXPORTS CONSUMPTION  is another way of saying consumer spending. it's the money you or i spend on physical goods like coffee , and on services like haircut .