how to install apk files on leapdroid emulator?
i watched this method in other websites, thanks to the owner.
first download the ES file explorer on google play or web browser using leapdroid emulator. after installation, close the emulator.
open "This pc">local disk c:>program files>LEAPDROID>VM folder>run virtualbox.exe as administrator(wait). choose on VM1 and click settings.click on shared folders and click yw_shared to add folder. choose the location of the additional folder(rename if you want) and check auto mount. locate the folder and put the apk file(s). check the pictures below.
now open ES file explorer on leapdroid emulator. select local> click on device and open mnt folder and shared folder. 
tada! you can now install your apk files.
thanks for the upvotes.