97 trees were planted, 3 died, and 3 were replanted later, all survived, what is the survival rate?
种树97棵，枯死3棵，后来又补种了3棵，全部成活，成活率是多少．
<gadget id="calculator">97 - 3</gadget>
<output>94</output>

<gadget id="calculator">94 + 3</gadget>
<output>97</output>

<gadget id="calculator">97 + 3</gadget>
<output>100</output>

<gadget id="calculator">97 / 100</gadget>
<output>97/100 = around 0.97</output>

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

<gadget id="calculator">(97/100) * 1</gadget>
<output>97/100 = around 0.97</output>

<result>97/100 = around 0.97</result>