500 trees were planted, only 5 did not survive, what is the survival rate?
栽了500棵树，只有5棵没成活，成活率是多少．
<gadget id="calculator">500 - 5</gadget>
<output>495</output>

<gadget id="calculator">495 / 500</gadget>
<output>99/100 = around 0.99</output>

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

<gadget id="calculator">(99/100) * 1</gadget>
<output>99/100 = around 0.99</output>

<result>99/100 = around 0.99</result>