columns. Not counting: 16 trees were planted, 12 survived, what percentage is the survival rate?
列式．不计算：植树16棵，活了12棵，成活率是百分之几？
<gadget id="calculator">12 / 16</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) * 1</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>