microwave oven, marked on the product manual: the internal size of the oven cavity is 400*225*300 (unit: mm). What is the volume of this microwave oven.
一种微波炉，产品说明书上标明：炉腔内部尺寸400*225*300(单位：mm)．这个微波炉的容积是多少．
<gadget id="calculator">400 / 100</gadget>
<output>4</output>

<gadget id="calculator">225 / 100</gadget>
<output>9/4 = around 2.25</output>

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

<gadget id="calculator">4 * (9/4) * 3</gadget>
<output>27</output>

<result>27</result>