Use cuboid bricks with a length of 20cm, a width of 12cm, and a height of 10cm to build a wall. The wall is 20m long, 24cm wide, and 3m high. How many bricks are needed in total?
用长20cm、宽12cm、高10cm的长方体的砖砌墙，这个墙长20m，宽24cm，高3m，一共需要多少块砖？
<gadget id="calculator">20 * 100</gadget>
<output>2_000</output>

<gadget id="calculator">3 * 100</gadget>
<output>300</output>

<gadget id="calculator">2_000 * 24 * 300</gadget>
<output>14_400_000</output>

<gadget id="calculator">20 * 12 * 10</gadget>
<output>2_400</output>

<gadget id="calculator">14_400_000 / 2_400</gadget>
<output>6_000</output>

<result>6_000</result>