A rope is cut off (2/5), and there are 75 meters left. If it is cut again (2/3), how many meters are left.
一根绳子剪去(2/5)，还剩75米，如果再剪(2/3)，还剩多少米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">75 * (2/3)</gadget>
<output>50</output>

<gadget id="calculator">75 - 50</gadget>
<output>25</output>

<result>25</result>