Problem 3018. Calculator spelling - Numbers to Letters

Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following numbers can characterize the following letters:

• 0 = O
• 1 = I
• 2 = Z
• 3 = E
• 4 = h
• 5 = S
• 6 = g
• 7 = L
• 8 = B

There are a few other options, but we'll stick with these. The number may be a have a decimal with a leading zero, to produce a trailing O. If this is the case, ignore the decimal point. Write a function that takes a number as input and returns the word spelled (upside down) by the calculator. Make sure to get the case (capital vs. lowercase) right for each number/letter.

This problem is related to Problem 3019.