Operate the demo phone? iPhone 12

1. First open Apple's mobile phone and click the calculator as shown in the figure below:

2. Then enter two numbers to subtract, as shown in the figure below:

3. Finally, enter the multiplication sign, multiply by a number, and then enter the equal sign. Apple's mobile phone will calculate multiplication first, and then calculate the process of addition and subtraction as shown in the following figure:

The method is particularly simple, and friends who can't learn can try it.