A rectangular piece of land is 63 meters long and long (4/9) wide. Find the area of this piece of land.
一块长方形地，长63米，宽是长的(4/9)，求这块地的面积．
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">63 * (4/9)</gadget>
<output>28</output>

<gadget id="calculator">63 * 28</gadget>
<output>1_764</output>

<result>1_764</result>