Have a fear of big numbers? I don't. I made a project about how to say numbers up to 9.99*10^308. In standard form, that would be 9990000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 or around a duocentillion. Anyway, press the x10 button to multiply the number by 10, the /10 to divide it by 10, and the Say it button to say the number.
*no notes or credits, I didn't have to credit anyone*