Using the numbers [3, 27, 69, 87], create an equation that equals 99. 
    You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. Show your work in <think> </think> tags. Your equation should look like an equation, not just an isolated answer. Every equation must be fully formed and solve to the target number. 
    Show your work, step by step, using the information below:
    1. Add all the numbers together.
    2. Determine what needs to be subtracted or added to reach the target.
    3. Perform the operation or operations required.
    Once you have the correct equation, show it in <answer></answer> tags, for example <answer>(1 + 2) * 3 = 9</answer>.
    