There is a 5-meter-long ribbon, cut (1/3) meter each time, how much is left after cutting 6 times
有一条5米长的彩带，每次剪下(1/3)米，剪6次后还剩多少
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 6</gadget>
<output>2</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<result>3</result>