Take a coin and toss it 70 times, what percentage of the total number of tosses will it come up heads?
拿一枚硬币，投掷70次，出现正面的次数大约占总投掷次数的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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