decision theory – Expected Utility

I am confused by something regarding expected utility calculation.

When we are calculating the expected utility where 2 positive outcomes can happen at the same time such as the example below:

We win 50 with probability of 0.3

We win 100 with probability of 0.2

How do we calculate the expected utility? Which of the options below is correct?

(1)$50 times 0.3 + 100 times 0.2 = 35$

(2)$50 times 0.3 + 100 times 0.2 + 150 times (0.3 times 0.2) = 44$