A sand truck can transport sand and gravel (1/6) at one time, how much can it transport 4 times.
一辆运砂车一次可运砂石(1/6)，4次可运多少．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) * 4</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>