On the plan of the rectangular playground with a scale of (1/1000), the length of the playground is 15cm and the width is 12cm. If the playground is divided into basketball and volleyball areas according to 5:4, do you know the area of the volleyball area? ?
在比例尺是(1/1000)的长方形操场平面图上，量得操场的长度是15cm，宽是12cm，如果这个操场按5：4划出篮球区和排球区，你知道排球区的面积是多少吗？
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">15 / (1/1_000) / 100</gadget>
<output>150</output>

<gadget id="calculator">12 / (1/1_000) / 100</gadget>
<output>120</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">150 * 120 * (4/9)</gadget>
<output>8_000</output>

<result>8_000</result>