If you ignore the fact that the question contains the phrase "3 time's 3" which is without any meaning, the answer is 89333197.32.
12 divided by 4 plus 2 times 3 = 9
25 times 6 times 25 minus 8 plus 12 divided by 5 = 3,744.4
18
678 + xyz + 360 = xyz + 1038
It is (12*8)/(9+1) = 9.6
9 divided by 9 equals 1, and 3 times 12 equals 36. 1 plus 36 equals 37.
20.6
24 + 4 = 28
22150.5
Since there are no brackets, evaluating it gives 187.89Also, your spelling and grammar are dreadful. It is plus, not pluss. The correct form is times, not time's which is the possessive form and means belonging to the 12 (or 48).
36/12 = 3 x 4 = 12 + 15 = 27
12