You should probably warm up with a stretching routine and a light job, because all your muscles (including your heart) cannot remain healthy and will be overworked if you dive into a vigorous aerobic routine without a proper warm up.
The distributive property
1 billion dollars × 6 inches per dollar = 6 billion inches / 63,360 inches per mile = 94,636.97 miles coverted by1 billion bills. answer = 94,636.97 miles