There are 700 TV sets, and they are transported by car, 50 sets are transported each time, 11 times, how many sets are still left?
有700台电视机，用汽车来运，每次运50台，运了11次，还有多少台没有运？
<gadget id="calculator">50 * 11</gadget>
<output>550</output>

<gadget id="calculator">700 - 550</gadget>
<output>150</output>

<result>150</result>