Classmates in Class 1 of June planted 50 trees, but 3 failed to survive. What is the survival rate?
六一班同学栽树，栽了50棵，3棵未成活，成活率是多少．
<gadget id="calculator">50 - 3</gadget>
<output>47</output>

<gadget id="calculator">47 / 50</gadget>
<output>47/50 = around 0.94</output>

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

<gadget id="calculator">(47/50) * 1</gadget>
<output>47/50 = around 0.94</output>

<result>47/50 = around 0.94</result>