\( \left. \begin{array} { l } { 1 - ( 9 - 4 ) \div 5 = } \\ \hline \end{array} \right. \)

Let's break it down step by step! First, we solve the expression inside the parentheses: \(9 - 4 = 5\). Next, we divide this result by 5: \(5 \div 5 = 1\). Finally, we substitute this back into the equation: \(1 - 1\), which equals \(0\). So, the final answer is \(0\)! Mathematics isn't just about numbers; it has been a vital part of human civilization for thousands of years! From ancient Babylonians using base-60 systems to modern calculators, math has evolved dramatically. Its impact spans architecture, astronomy, and even game design. Who would have imagined that thinking like an ancient scribe could lead to video games today? If you're ever confused while solving equations, remember to follow the order of operations: PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction). A common mistake is to do operations left to right without respecting this order, which can lead to incorrect answers. So next time, keep PEMDAS in mind and empower yourself with the magic of clear calculations!