A rectangular football field is 180 meters long and 90 meters wide. Draw it on a drawing with a scale of (1/2000), what is the area of the football field drawn on the drawing?
一个长方形足球场，长180米，宽90米，把它画在比例尺是(1/2000)的图纸上，画在图上的足球场面积是多少？
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">180 * 100 * (1/2_000)</gadget>
<output>9</output>

<gadget id="calculator">90 * 100 * (1/2_000)</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">9 * (9/2)</gadget>
<output>81/2 = around 40.5</output>

<result>81/2 = around 40.5</result>