The playground of Yucai Primary School is a rectangle drawn on a plan with a scale of 1:4000, with a length of 6 cm and a width of 3 cm. What is the actual area of the playground in square meters?
育才小学的操场是一个长方形，画在比例尺是1：4000的平面图上，长6厘米，宽3厘米．操场的实际面积是多少平方米？
<gadget id="calculator">1 / 4_000</gadget>
<output>1/4_000 = around 0.00025</output>

<gadget id="calculator">6 / (1/4_000) / 100</gadget>
<output>240</output>

<gadget id="calculator">3 / (1/4_000) / 100</gadget>
<output>120</output>

<gadget id="calculator">240 * 120</gadget>
<output>28_800</output>

<result>28_800</result>