Just think of a number in your mind, then add 52.8 and multiply it by 5, then subtract 3.9343, divide it again by 0.5 and then subtract ten times the number you are thinking of, which equals 520.1314

Others are very simple. After conversion, the final result is always (260.0657 divided by 0.5), which is (520.1314). At the middle school level, it is to first set a number (520.1314) and then push up.

If you think of a number as /p>

＝（5X＋264－3.9343）/0.5-10X

＝（5X＋260.0657）/0.5－10X

＝10X＋520.1314－10X

＝520.1314

So no matter what number is used, the number is irrelevant, the front and back have been washed away, and the result is the same. You can set a number at will and derive a formula.

For example: 13709394, etc.

Reference materials: /question/20654310.html?si=1