After subtracting its (2/5) from a 100-meter-long wire, and then subtracting 5 meters, how many meters are left
100米长的电线减去它的(2/5)后，再减去5米，还剩多少米
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">100 * (3/5)</gadget>
<output>60</output>

<gadget id="calculator">60 - 5</gadget>
<output>55</output>

<result>55</result>