Right-hand calculator to return the previous value of the calculation method, for example, a simple small example: there are 9 apples, 9 pears, how many fruits? If you divide it equally among nine children, how many do you give each child? And if it is evenly distributed to 6 children under friends, the type of fruit does not have to be the same, then how many points are scored on average for each child? How do you type this out on a calculator all at once? The above is a simple example, the actual situation, please apply yourself!!