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To find the total sum, we will add up all the numbers shown in the image. We can group them by rows to make it easier.

Step 1: Add the numbers in the first row (top)
The numbers are: 2, 3, 4, and 5.
$$2 + 3 = 5$$
$$5 + 4 = 9$$
$$9 + 5 = 14$$
*Sum of Row 1 = 14*

Step 2: Add the numbers in the second row (middle)
The numbers are: 6, 7, 8, and 9.
$$6 + 7 = 13$$
$$13 + 8 = 21$$
$$21 + 9 = 30$$
*Sum of Row 2 = 30*

Step 3: Add the numbers in the third row (bottom)
The numbers are: 10, 11, 12, and 13.
$$10 + 11 = 21$$
$$21 + 12 = 33$$
$$33 + 13 = 46$$
*Sum of Row 3 = 46*

Step 4: Calculate the Grand Total
Now, add the sums from all three rows together:
$$14 \text{ (Row 1)} + 30 \text{ (Row 2)} + 46 \text{ (Row 3)}$$

First, add 14 and 30:
$$14 + 30 = 44$$

Then, add 46 to that result:
$$44 + 46 = 90$$

Final Answer:
90