What is the product of 5.4 times 3.9 plus the quotient of 4.8 divided by 2.4?
5.4乘以3.9的积加上4.8除2.4的商，结果是多少？
<gadget id="calculator">5.4 * 3.9</gadget>
<output>21.06</output>

<gadget id="calculator">2.4 / 4.8</gadget>
<output>0.5</output>

<gadget id="calculator">21.06 + 0.5</gadget>
<output>21.56</output>

<result>21.56</result>