Is that a hyphen or a minus sign?

If a hyphen (dash) then 23.44 is bigger. If a minus sign, then 23 is bigger.

That can be a minus sign or a hyphen.

If that is a hyphen the answer is 80. if it is a minus sign the answer is 80i where i is the square root of minus 1

The hyphen is a dash used to separate the syllables in hyphenated words such as built-in. On a keyboard, the minus sign is used to make a hyphen.

A hyphen (also known as a dash or minus sign) looks like this: - On most standard QWERTY-style computer keyboards, a hyphen or dash appears above the letter 'P' and to the right of the number zero. It may also appear on the keyboard's number pad as a minus sign.