The area of a parallelogram is 126 square meters, if its base is 30 meters, what is its height in meters? (Solution of column equation)
一块平行四边形地的面积是126平方米，如果它的底是30米，那么它的高是多少米？(列方程解)
<gadget id="calculator">126 / 30</gadget>
<output>21/5 = around 4.2</output>

<result>21/5 = around 4.2</result>