I need some help with this.

The probability to get 6 at each throw of a dice is 0.4(dice is unfair). We throw the dice 10 000 times and let X be the number of "6" in these throws.

What is the expected value for X?

So far I made this:

Y is a random variable for each throw

Y ~

0 | 1

0.6| 0.4

I think it's correct, but what to do next?