There is a parallelogram cornfield with a base of 135m and a height of 78m. How many hectares does this cornfield have?
有一块平行四边形的玉米地，底是135m，高是78m，这块玉米地有多少公顷？
<gadget id="calculator">1 * 10_000</gadget>
<output>10_000</output>

<gadget id="calculator">78 / 10_000</gadget>
<output>39/5_000 = around 0.0078</output>

<gadget id="calculator">135 * (39/5_000)</gadget>
<output>1_053/1_000 = around 1.053</output>

<result>1_053/1_000 = around 1.053</result>