If 1/3 of world is in lockdown:

This means that 2.6 billion people are presently in lockdown worldwide right now. 1/3 of 7.8 billion

The rest of the world that hasn't had it bad yet likely will at some point in the future. I give it probably 5 years total but most of the world that people travel to a lot to will be over within 2 years time. But, that might give the rest of the world time to prepare better for what is eventually coming there as well.

If you have a line on your pages that says something like  .com or .htm or .html at some point you can just write in that line on a blank page   "1/3 of 7.8 billion" and click enter and it will give you the answer right then for example. This is even easier than pulling out a calculator I find.

It might have google.com there so you need to run a blue line through it by dragging your cursor through it first then hitting a space bar though. or you can just put your cursor up their and hold down the delete button until it erases everything on that line.

I can do this on chrome with google.com pages at least.