using the numbers ... to make 2007?

Question

21, 7, 2, 6, 5, 94.
Numbers can only be used only once,
times, divide, plus and minus operations can be used.

And is there any way to figure it out other than random guesses?
Thanks!

Answer 1

(21*94) + (2+6)*5 - 7 =

1974 + 8*5 - 7 =
1974 + 40 - 7 =
1974 + 33 =
2007

Answer 2

Depends on whether you can use exponents, factorials, etc.

Some are easy:

2 + 0 + (0 * 7) = 2
7 - 2 + 0 + 0 = 5
7 - 2^0 + 0 = 6
7 - 2*0 + 0 = 7
7 * (2 + 0!) + 0 = 21

94 isn't possible, from what I can see.