4 / (2/3) =
4 * 3/2 =
12/2 =
6....so there are 6 two-thirds cup servings in a 4 cup container
3449995000 is what I got, I did 3.45x10^9 and then used that number and subtracted the answer from 0.5x10^4 to get the final answer, if that makes any sense.
You answer for 24x3+18x2-6x would be 102x
This is a lot of math to write.... so I'll just say the answer is -21 :D