Question

504÷18=?
□ ÷18=□

Explanation:

Step1: Split divisor into factors

$18 = 9 \times 2$

Step2: Divide by first factor

$504 \div 9 = 56$

Step3: Divide result by second factor

$56 \div 2 = 28$

Answer:

Helper equation: $504 \div 9 \div 2 = 28$
Final result: $28$