Using the numbers [-2, 5, 8, 23], create an equation that equals 37. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once, along with parentheses for grouping if needed. Show your work in <think> </think> tags below to explain your solution. And return the final equation and answer in <answer> </answer> tags, for example <answer> (20 + 5) * (-1) = 35 </answer>.