How to use shortcut keys to repeat entered code?

Question

<div><div>

<div><div>

<div><div>

<div>< ;div>

Where are the shortcut keys?

Answer 1

This time it was 4, next time 5, sometimes 3

Answer 2

You can use the Emmet plug-in

The code is:

div*4

That’s it

The effect ：

##