On Sunday, Xiao Ming went to the swimming pool to swim. He swam 7 times. The length of the swimming pool was 50 meters. How many meters did Xiao Ming swim in total?
星期天小明去游泳馆游泳，他游了7个来回，游泳池长50米，小明一共游了多少米？
<gadget id="calculator">7 * 2 * 50</gadget>
<output>700</output>

<result>700</result>