Calculate Remaining Flowers: 13 Bushes × 5 Flowers + 9 Plants × 2 Flowers - 40 Picked

We will convert the question into an exercise with which we are familiar:

$\left(5\times 13-30\right)+\left(9\times 2-10\right)$

First, we will solve everything that is in the parentheses, starting with the multiplication and division from left to right:

$\left(65-30\right)+\left(18-10\right)$

Then the addition and subtraction operations that are in the parentheses:

$35+8$

Finally, we perform the operations outside of the parentheses:

$35+8=43$