How much would former President Donald Trump’s proposed 10 percent tariff plan actually cost the average American household? The wave of tariffs Trump enacted when he was last president caused chaos, but there are many complexities that muddy this somewhat. However, MSNBC’s Chris Hayes took an educated and simple guess at just how badly the country would be hit in the pocketbook under Trump’s second-term plans. “We don’t know exactly how much everything would cost,” said Hayes, but “just add 10 percent on the back of the napkin. Here’s the cost of living under the Trump Tax.” Want more breakin…