How many people come to the us for medical procedures each year?

There are 999,999,9999,99999,999999,9999999,9999999,9,9,9,9,9,9,9,9,99999999999999999999,9,,,,,,,,,,,,,99999999999999999999999999 people every billion years!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!