What is the quotient of 15.4 plus 5.6 divided by 2.8?
15.4加上5.6除以2.8的商，列式为多少
<gadget id="calculator">5.6 / 2.8</gadget>
<output>2</output>

<gadget id="calculator">15.4 + 2</gadget>
<output>17.4</output>

<result>17.4</result>