Open a word document, assuming that an x is entered in the document.

2

Place the cursor in front of the x and select the caret.

three

Select another symbol among symbols, and a character dialog box will appear.

four

In the symbol dialog box that appears, select the font symbol, enter the code 96, then select Insert, and finally close.

five

After the completion, I found that the average symbol appeared on X. Pay attention to that the cursor must be set in front of the number!

"p" replaces one of the wildcards used. When inputting, switch to English input method (half angle). The first "P" is the "6" of the horizontal numeric keys above the keyboard. Hold down shift, press this "6", and then enter another "P", that is, the input of "P" is completed.