Calculate with a simple method: 7.2-((2.7)/15)-0.32.
用简便方法计算：7.2-((2.7)/15)-0.32．
<gadget id="calculator">2.7 / 15</gadget>
<output>0.18</output>

<gadget id="calculator">7.2 - 0.18 - 0.32</gadget>
<output>6.7</output>

<result>6.7</result>