Well, we are asked to simplify and solve this multiplication problem.
So, at first, this looks a little bit tricky but, we can actually break it down and then multiply with easy numbers.
First off, we can multiply 4 by 9 which is 45 however, we still have that major 50 so, to make it easier, we can just change the 50 to a 5 and then add the 0 at the end when we get our answer.
45 * 5
= 225
Lastly, we just need at put and add a zero (0) to our answer so, in conclusion, the answer to this question is: 2250.