here are the solutions i could suggest:

1. buy an external dvd/cd drive. these drives usually connect through your USB ports and generally cost about 10 to 20 dollars
2. some software companies that lets you buy their product keys exclusively online through paypal or your credit card. you can download their free software and you can usually enter these product keys to upgrade these software into the paid versions.
3. install your software through a USB flash drive. generally, you'll be needing another computer for this that has a disc drive. put in your disc and if you're lucky, you could copy the disc's contents into your flash drive. plug this flash drive onto your main computer and run the setup from there through the usb.
4. stick with the free downloadable software. i also wouldnt want you to download cracked paid software illegally as most of these would deem fake and would do more harm to your computer

cheers!

Y