(Brainliest) Please Help! Please do not give me a random, gibberish answer or I will report you and give you a low rating therefore dropping your popularity. Also, if you don't know the answer you can put your guess in the comments. I will give a Brainliest and 50 points!

What mass of KBr is present in 20.0 mL of 15.5% (m/v) KBr solution?