How many Piano tuner are there in the world?

There are 300 million people in America. According to the calculation of a family of three, there are 654.38 billion families in the United States. If half of the families, that is, 50 million families belong to the rich class, the proportion of 654.38+00% owning the piano may be a little high, but it is allowed to calculate the approximate proportion. Then 5 million families have pianos, so there are 50 million in America. If each piano is tuned once a year and a Andhadhun is tuned 65,438+0,000 times a year, then the number of people in Andhadhun is 5 million divided by 65,438+0,000, which is equal to 5,000 people. The population of the world is more than 6 billion, which is 20 times that of the United States, but Andhadhun should be less than 20 times that of the United States. Roughly speaking, the number of people in Andhadhun in the United States accounts for about 1/4 of the world, and there should be 20,000 people in Andhadhun. Other answers are also possible, because the answer is not unique. This is a Google advertising recruitment question, which can also be answered by reverse thinking or special thinking. Hope to adopt. Thank you. Don't adopt and don't insist.