Aunt Li bought a bottle of 1.2 liters of shampoo and used up (2/5) liters a month later. How many liters are left?
李阿姨买了一瓶洗发水1.2升，一个月后用去了(2/5)升，还剩下多少升？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1.2 - (2/5)</gadget>
<output>0.8</output>

<result>0.8</result>