The farmer uncle wants to spray pesticides on a paddy field 600 meters long and 200 meters wide. It is known that 12 kilograms of pesticides are needed per hectare. How many kilograms of pesticides need to be sprayed on this paddy field?
农民伯伯要给一块长600米、宽200米的稻田喷洒农药．已知每公顷需要农药12千克，这块稻田一共需要喷洒多少千克农药？
<gadget id="calculator">200 / 10_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">600 * (1/50) * 600 * (1/50)</gadget>
<output>144</output>

<result>144</result>