If '+' means '÷', '−' means '×', '×' means '+' and '÷' means '−', what is the value of $18 \times 4 + 2 - 5 \div 3$?

Explanation

1. 01

   Replace every sign by what it means: × becomes +, + becomes ÷, − becomes ×, ÷ becomes −.

2. 02

   The expression becomes $18 + 4 \div 2 \times 5 - 3$.

3. 03

   Division and multiplication first: $4 \div 2 = 2$, then $2 \times 5 = 10$.

4. 04

   $18 + 10 - 3 = 25$.