Yes Rick, I posted in haste and should have explained to the OP that the
tests
(A1200)
(A1<300)
would lead to a True or False result.
When Multiplied together, the True's would be coerced to 1's and the
False's to 0's

Hence
A1*TRUE*TRUE becomes A1*1*1 which returns the value in A1
If either (or both) of the tests is False, then we get 0.
A1*0*1 = 0
A1*1*0 = 0

I was going to make the OP look it up and try to decipher it... in thinking
about it, it is better that the explanation be given directly as you did...
good job there.

Rick