Why does 1650*1.33 = 4389/2?
okay I am going to play with this question
$$1650\times 1.33\\\\ =1650\times\frac{133}{100}\\\\ =165\times\frac{133}{10}\\\\ =33\times\frac{133}{2}\\\\ =\frac{4389}{2}\\\\ =\mbox{ RHS}$$
There you go - that is why!
it is telling you to divide 4389 by two o get your final answer.
Here's another way to look at it.......just subtract one side from the other.......if you get "0," both things must be equal !!!