At the bottom right of the box, the number is 10 to the power of 0.0. It means 10 to the power of 0 which equals 1.
One thing I learned about was the quantum or spacetime foam. I would tell you the size but I can’t because it is so small that the foam cannot be measured or seen. It is at 10 to the negative 35th power or 0.00000000001 yoctometers. The foam is also the very foundation of the fabric of the universe.
We use negative exponents in scientific notation because they are an easier way of saying that a number needs to be smaller. As for positive exponents, they are an easier way of saying that a number needs to be bigger-> 543,321,678=5.43321678 multiplied by 10 to the power of 8. If you are multiplying multiple numbers, you can just simplify the numbers and add the powers of 10 to get one big final problem instead of another process. Scientific notation is just an easier way of saying numbers that are too big or small.