17372=+127-1888’72(728) -9 (173-) 198390

I’m not sure what you want with that string. It isn’t a standard arithmetic expression as written, and there are several possible interpretations. Could you clarify which one you intend?

Possible interpretations and what I’d need to proceed:

• Arithmetic puzzle (fill in operators): You want to make the equality hold by choosing operators and parentheses. If so, please confirm what “’” means (multiplication? a separator?), and whether “1888’72(728)” should be read as something like 1888 × 72 × 728 or 1888’72 as a single number, etc. Also confirm how to treat “(173-)” and the trailing 198390.
• Calculator/ upside-down word puzzle: Do you want to read the numbers upside down to form words? If yes, we can map digits to letters (0=O, 1=I, 2=Z, 3=E, 4=h, 5=S, 6=g, 7=L, 8=B, 9=g) and see what phrases appear on both sides.
• Alphametic / cryptarithm: Are digits supposed to stand for letters to spell something? If so, please provide the target word or the letter mapping rules.
• Other puzzle type: If this is a direct puzzle from a book or exam, please share the rules or the intended goal (e.g., find a value, decode a message, etc.).

If you can specify which interpretation you want (or provide a cleaned version with explicit operators), I can solve it or show you a clear method step by step.