Kobayashi's family planted 400 navel oranges this spring, and 8 died. What is the survival rate?
小林家今年春天种了400棵脐橙，死了8棵，成活率是多少．
<gadget id="calculator">400 - 8</gadget>
<output>392</output>

<gadget id="calculator">392 / 400</gadget>
<output>49/50 = around 0.98</output>

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

<gadget id="calculator">(49/50) * 1</gadget>
<output>49/50 = around 0.98</output>

<result>49/50 = around 0.98</result>