Zhang Li is 10 years old and weighs 43 kilograms. Her father's weight is twice her. How many kilograms does dad weigh?
张丽今年10岁，体重43千克，爸爸的体重是她的2倍．爸爸体重多少千克？
<gadget id="calculator">43 * 2</gadget>
<output>86</output>

<result>86</result>