A drawer is 60 cm long, 30 cm wide, and 15 cm high. How many square centimeters of wood is needed to make such a drawer?
一个抽屉长60厘米，宽30厘米，高15厘米，做这样的抽屉至少需要木板多少平方厘米．
<gadget id="calculator">60 * 30</gadget>
<output>1_800</output>

<gadget id="calculator">60 * 15</gadget>
<output>900</output>

<gadget id="calculator">30 * 15</gadget>
<output>450</output>

<gadget id="calculator">900 + 450</gadget>
<output>1_350</output>

<gadget id="calculator">1_350 * 2</gadget>
<output>2_700</output>

<gadget id="calculator">1_800 + 2_700</gadget>
<output>4_500</output>

<result>4_500</result>