If you multiply any number by a decimal number, you WILL make it smaller, because if you multiply a number by something less than one, you will get something less than itself. This also works if you multiply a number by a fraction.
For example, 4 times 0.5 equals 2 because you are getting half of the original number which is 4
Also, it will work like this for a fraction:
6 times 2/3 is 4.