To solve the expression $100 \div 4(2 + 3)$, let's break it down step by step:

1. Parentheses first: $2 + 3 = 5$ Now, the expression becomes: $100 \div 4(5)$

2. Multiplication implied by parentheses: $4(5) = 20$ So now, the expression is: $100 \div 20$

3. Division: $100 \div 20 = 5$

Therefore, the result of $100 \div 4(2 + 3)$ is 5.

Do you need more details or have any questions? Here are 5 related questions to explore:

1. How does the order of operations (PEMDAS) affect this calculation?
2. What happens if you change the expression to $100 \div [4(2+3)]$?
3. How do parentheses influence the outcome of arithmetic expressions?
4. Can you explain why multiplication by parentheses is performed before division?
5. What is the result of $100 \div 4 + 5$ instead of $100 \div 4(2+3)$?

Tip: Always follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction) to avoid mistakes in complex expressions.