Principal Zhang intends to ask Master Zhao to make 50 drawers with a length, width, and height of 2.8dm, 1.5dm, and 2dm respectively. How many square meters of wood boards do you need at least?
张校长打算请赵师傅做50个长、宽、高分别为2.8dm、1.5dm和2dm的抽屉，至少需要多少平方米的木板呢？
<gadget id="calculator">2.8 * 2</gadget>
<output>5.6</output>

<gadget id="calculator">1.5 * 2</gadget>
<output>3</output>

<gadget id="calculator">5.6 + 3</gadget>
<output>8.6</output>

<gadget id="calculator">8.6 * 2</gadget>
<output>17.2</output>

<gadget id="calculator">2.8 * 1.5</gadget>
<output>4.2</output>

<gadget id="calculator">17.2 + 4.2</gadget>
<output>21.4</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">21.4 * (1/2)</gadget>
<output>10.7</output>

<result>10.7</result>