Xiaoliang weighs 28 kilograms, and his father's weight is 2.5 times that of Xiaoliang. How many kilograms do father and Xiaoliang weigh together?
小亮体重28千克，爸爸的体重是小亮的2.5倍，爸爸和小亮一共重多少千克？
<gadget id="calculator">28 * 2.5</gadget>
<output>70</output>

<gadget id="calculator">28 + 70</gadget>
<output>98</output>

<result>98</result>