Excel formula that looks for character in cell, then copies word to another cell

I have a spreadsheet with 1,000's of rows. In column A, there are comments. There is a ton of text I am trying to sort through. Within this text, I have $ amounts. So in the fields, i have comments and will specify a dollar amount. Almost every row in Column A has a $. The format i have is $1.00 or $1,000.00. Is there a way i can look at Column A for all text that has a $, then copy that whole value to the cell next to it, column B? So if in A1 I have a whole bunch of comments, in the middle is $25.00, i would want $25.00 in B1. All the way down. And a weird question, I am hoping it can look for the $ in the middle of a word too. Every once and a while, as we specify how many units they want to purchase, we put 5$25.00. Which means 5 units for $25 each. So i would want the cell next to it (column B) to copy over the whole text, 5$25.00. I hope that makes sense. Is there a way to do this?