A wooden box without a lid is made from a board 1 cm thick, the length of the wooden box is 80 cm, and the width is 52 cm. The height is 43 cm. What is the maximum volume of this wooden box?
用厚1厘米的木板做一个无盖的木箱，木箱长80厘米，宽52厘米．高43厘米，做成的这个木箱的容积最大是多少立方分米？
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">80 - 2</gadget>
<output>78</output>

<gadget id="calculator">52 - 2</gadget>
<output>50</output>

<gadget id="calculator">43 - 1</gadget>
<output>42</output>

<gadget id="calculator">42 / 1_000</gadget>
<output>21/500 = around 0.042</output>

<gadget id="calculator">78 * 50 * (21/500)</gadget>
<output>819/5 = around 163.8</output>

<result>819/5 = around 163.8</result>