the correct question is
What is (100)*(23/25)*(3/16)
we have that
(100)*(23/25)*(3/16)-------------> [100*23*3]/[25*16]
[100*23*3]/[25*16]-----------> [(100/25)*(23*3)]/16
[(100/25)*(23*3)]/16---------> [4*23*3]/16
[4*23*3]/16-----------> [23*3]/4=69/4
69/4=17.25----------> 17 1/4
the answer is 17.25 (17 1/4)
