In order to measure the volume of a radish, Xiaowei first cut another radish into a cuboid with a length of 5 cm, a width of 4 cm and a height of 2 cm, and weighed the cuboid with a balance of 20g, and then weighed the radish to be measured with a balance It weighs 320 grams, what is the volume of this carrot in cubic centimeters?
小薇为了测量一个萝卜的体积，先将另一个萝卜削成一个长5厘米，宽4厘米，高2厘米的长方体，并用天平称出这个长方体重20g，接着用天平称出要测量体积的萝卜重320克，这个萝卜的体积是多少立方厘米？
<gadget id="calculator">5 * 4 * 2</gadget>
<output>40</output>

<gadget id="calculator">20 / 40</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">320 / (1/2)</gadget>
<output>640</output>

<result>640</result>