evaluate (8!) / (4!*4!)

8! we verbally say this as 8 factorial.  8 factorial means
8x7x6x5x4x3x2x1 which you should get 40,320 as your
numerator.

Then 4! is 4x3x2x1 which is 24.  Since you have
4! x 4! the denominator is 24 x 24 which is 576.

So now you
have 40,320 / 576.  Now all you have to do is divide.  40,320 divided by 576 and you
also get 70.