Xiahou Primary School bought 216 boxes of white chalk and 84 boxes of colored chalk. Each box of chalk is 40 pieces. How many pieces of chalk did the school buy in total?
夏侯小学买来白色粉笔216盒，彩色粉笔84盒，每盒粉笔都是40支，学校一共买来粉笔多少支？
<gadget id="calculator">216 + 84</gadget>
<output>300</output>

<gadget id="calculator">300 * 40</gadget>
<output>12_000</output>

<result>12_000</result>