Using the numbers [2, 3, 7, 25], create an equation that equals 89. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. Show your work in <think> </think> tags. And return the final equation and answer in <answer> </answer> tags, for example <answer> 2 * 7 + 3 + 25 = 89 </answer>.