What is the difference if you subtract 40% of it from 120?
120减去它的40%，差是多少？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 * (2/5)</gadget>
<output>48</output>

<gadget id="calculator">120 - 48</gadget>
<output>72</output>

<result>72</result>