A table is 605 yuan, and a chair is 20.5 yuan cheaper than a table. How much is a table and a chair in total?
一张桌子605元，一把椅子比一张桌子便宜20.5元，一张桌子和一把椅子一共多少元？
<gadget id="calculator">605 - 20.5</gadget>
<output>584.5</output>

<gadget id="calculator">584.5 + 605</gadget>
<output>1_189.5</output>

<result>1_189.5</result>