If a 1 yuan coin is thrown upwards at random, what is the probability that the word "1 yuan" will face up?
1元的硬币任意向上抛，"1元"字样朝上可能性是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>