I hope that the sixth graders of elementary school will plant trees on the mountain, and 5 groups will plant 15 trees in each group. As a result, 69 trees survived. What is the survival rate?
希望小学六年级同学上山植树，5个组每组种15棵树，结果成活了69棵，成活率是多少？
<gadget id="calculator">15 * 5</gadget>
<output>75</output>

<gadget id="calculator">69 / 75</gadget>
<output>23/25 = around 0.92</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(23/25) * 1</gadget>
<output>23/25 = around 0.92</output>

<result>23/25 = around 0.92</result>