The price of a VCD is 420 yuan, and a TV is 300 yuan more than twice that of a VCD. How much is a TV?
一台VCD售价420元，一台电视机比一台VCD的2倍多300元，一台电视机多少元？
<gadget id="calculator">420 * 2</gadget>
<output>840</output>

<gadget id="calculator">840 + 300</gadget>
<output>1_140</output>

<result>1_140</result>