There are 42 cubic meters of wood piled up in the warehouse. Xiaoya wanted to know the weight of these woods. He took a piece of wood from it and measured the length to be 4 cm, width to 3 cm, height to 10 cm, and weight to 84 kg. The weight of the wood in?
仓库里堆放了42立方米的木料，小亚想知道这些木料的重量，他从中取了一块木料，测得长是4厘米，宽是3厘米，高是10厘米，重量是84千克，那么仓库中的木料的重量？
<gadget id="calculator">4 * 3 * 10</gadget>
<output>120</output>

<gadget id="calculator">84 / 120</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(7/10) * 42 * 1_000_000</gadget>
<output>29_400_000</output>

<result>29_400_000</result>