Well, the word 'of' means multiply in mathematical terms
Problem:
So, try going with these steps if you meant this⬇
Step 1: First,24% (80) = ?
Step 2: Second, 24% over 100
▶(which can also look like ➡) 24% ÷ 100
▶Just know they both are equaling to 0.24
0.24 = .24
Step 3: Third, 0.24(80) = 19.2
▶ .24 (80) = 19.2
Anyhow, your answer would have to be (if that's what you meant ) is: 19.2