The image contains several mathematical expressions, and it looks like the task is to complete the missing values. Let's analyze and solve the given problems:

1. (α) 225 ÷ 25 = ? $225 \div 25 = 9$ So, the missing value is 9.

2. (γ) 720 ÷ 40 = ? $720 \div 40 = 18$ And the expression is 18 · 80 = ? $18 \times 80 = 1440$ So, the missing value is 1440.

3. (ε) 300 ÷ 6 = 900 This equation is written as if it is an equality, but 300 ÷ 6 does not equal 900. Let's find the correct answer: $300 \div 6 = 50$ So, it seems the equation needs to be corrected to 300 ÷ 6 = 50.

Would you like more details on any part of the solution? Here are five related questions:

1. How do you calculate division of large numbers quickly?
2. What strategies can be used to double-check multiplication results?
3. Can you explain why the final equation, 300 ÷ 6 = 900, might be incorrect?
4. How would you simplify the expression 1440 ÷ 18 in reverse?
5. What are some common mistakes when dividing by large divisors?

Tip: Always double-check the order of operations in more complex calculations like combined division and multiplication.