Brain Out Level 137 presents a puzzle where you need to move two matchsticks to create the largest possible number. The initial arrangement likely shows a number that needs manipulation. By strategically moving two matchsticks from one part of the number to another, you can rearrange the digits to form a much larger value. The solution often involves creating a '1' and repositioning it to the beginning of the number, followed by creating a '0' or other large digit. The correct answer is 11811.