The area of the red scarf is 11.2 square decimeters, the bottom is 7 decimeters, and the height is how many decimeters.
红领巾的面积是11.2平方分米，底是7分米，高是多少分米．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">11.2 * (2/7)</gadget>
<output>3.2</output>

<result>3.2</result>