The sum of the given numbers is:

$40 + 40 + 40 + 20 + 60 + 40 + 40 + 40 + 80 + 40 + 40 + 180 + 40 = 700$

So, the total is 700.

Would you like a breakdown or details on this calculation?

Here are 5 related questions for further exploration:

1. What is the average of the numbers you provided?
2. How many numbers in the list are greater than 50?
3. What would be the sum if each number were increased by 10?
4. How would the sum change if you removed all instances of 40?
5. Can you find the median of this set of numbers?

Tip: To quickly find the sum of a series of numbers, organizing them into smaller, manageable groups can make mental calculations easier.