A factory needs to build a wall with a length of 20 meters, a width of 15 centimeters and a height of 2.5 meters. If 600 bricks are used per cubic meter, how many bricks will be used in total?
一个工厂要砌一道长20米，宽15厘米，高2.5米的围墙，如果每立方米的要用砖600块，一共要用砖多少块？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">20 * (3/20) * 2.5 * 600</gadget>
<output>4_500</output>

<result>4_500</result>