The original playground of Hope Primary School was 80 meters long and 60 meters wide. The expanded playground will reduce the area by 85% compared with the original area. The expanded part needs to invest 200 yuan per square meter. How much is the total investment?
希望小学原来操场长80米，宽60米，扩建操场，扩建部分的面积比原面积减少85%，扩建部分每平方米需要投入200元，共需要投入多少元？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">80 * 60 * (3/20) * 200</gadget>
<output>144_000</output>

<result>144_000</result>