triangular green space, the base is (40/3) meters, the area is 70 square meters, what is the height in meters
一块三角形绿地，底是(40/3)米，面积是70平方米，高是多少米
<gadget id="calculator">40 / 3</gadget>
<output>40/3 = around 13.333333</output>

<gadget id="calculator">2 / (40/3)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">70 * (3/20)</gadget>
<output>21/2 = around 10.5</output>

<result>21/2 = around 10.5</result>