A cuboid wooden box has a length of 10dm, a width of 8.5dm, and a height of 6dm. What is the minimum number of planks in dm**2 needed to make this wooden box?
一个长方体木箱，长10dm，宽8.5dm，高6dm，做这个木箱至少需要木板多少dm**2？
<gadget id="calculator">10 * 8.5</gadget>
<output>85</output>

<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">8.5 * 6</gadget>
<output>51</output>

<gadget id="calculator">85 + 60 + 51</gadget>
<output>196</output>

<gadget id="calculator">196 * 2</gadget>
<output>392</output>

<result>392</result>