To make a cuboid glass jar without a cover, the glass jar is 12 cm long, 10 cm wide, and 15 cm high, what is the minimum square decimeter of glass material required?
要制作一个无盖的长方体玻璃缸，玻璃缸长12厘米，宽10厘米，高15厘米，需要玻璃材料至少多少平方分米？
<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">12 * 15 * 2</gadget>
<output>360</output>

<gadget id="calculator">10 * 15 * 2</gadget>
<output>300</output>

<gadget id="calculator">120 + 360 + 300</gadget>
<output>780</output>

<gadget id="calculator">780 / 100</gadget>
<output>39/5 = around 7.8</output>

<result>39/5 = around 7.8</result>