triangular painting altar has an area of (7/20) square meters. Its base is (2/3) meters, what is its height in meters?
一块三角形画坛，面积是(7/20)平方米．它的底是(2/3)米，高是多少米．
<gadget id="calculator">7 / 20</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(7/20) / (2/3)</gadget>
<output>21/40 = around 0.525</output>

<gadget id="calculator">2 * (21/40)</gadget>
<output>21/20 = around 1.05</output>

<result>21/20 = around 1.05</result>