Easy operation. 5.7*3.2+5.7*6.8．
简便运算．5.7*3.2+5.7*6.8．
<gadget id="calculator">5.7 * 3.2</gadget>
<output>18.24</output>

<gadget id="calculator">5.7 * 6.8</gadget>
<output>38.76</output>

<gadget id="calculator">18.24 + 38.76</gadget>
<output>57</output>

<result>57</result>