On a drawing with a scale of 1:1000, measure a rectangular piece of land with a length of 5 cm and a width of 3 cm. What is the actual area of the land in square meters?
在比例尺是1：1000的图纸上，测得一块长方形的土地长5厘米，宽3厘米，这块地的实际面积是多少平方米．
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">5 / (1/1_000) / 100</gadget>
<output>50</output>

<gadget id="calculator">3 / (1/1_000) / 100</gadget>
<output>30</output>

<gadget id="calculator">50 * 30</gadget>
<output>1_500</output>

<result>1_500</result>