If the EU referendum debate just involves two politicians shouting contradictory statistics at each other - then we are here to help.

In this series, we're giving you a break from the politicians and we're going to try to figure out the truth. Bracing concept, isn't it? We'll be looking at some of the big questions - immigration, lawmaking, regulations and trade.But in this first program, Tim Harford tackles two very basic questions: how much would we save if we left the EU? And what would we lose if we did?