Copy the sketchpad: switch to the sketchpad tool (set the button for copying the sketchpad to unchecked), hold down Alt +Shift, click the mouse, copy the sketchpad horizontally (let the copied sketchpad encircle the picture on the right), and copy another sketchpad in the same way, and * * * get three sketchpads.
Just export JPG (check Use Sketchpad and all three files will be exported).
* If you want to output JPG, just uncheck Use Sketchpad in the direct export option (the picture may be too big to output).