Uncle Lin is going to build a brick wall that is 15 meters long, 3 meters high, and 1 meter thick. If 530 bricks are used per cubic meter, how many bricks will Uncle Lin prepare at least?
林叔叔准备砌一道长15米、高3米、厚1米的砖墙，如果每立方米用砖530块，林叔叔至少要准备多少块砖．
<gadget id="calculator">15 * 3 * 1</gadget>
<output>45</output>

<gadget id="calculator">530 * 45</gadget>
<output>23_850</output>

<result>23_850</result>