Teacher Li brought 10,000 yuan to buy office equipment, and 7,200 yuan to buy a computer. The remaining money can just buy 7 printers. How much is each printer?
李老师带了1万元钱去购置办公设备，买电脑用去了7200元，剩下的钱正好可以买7台打印机，每台打印机多少元？
<gadget id="calculator">10_000 - 7_200</gadget>
<output>2_800</output>

<gadget id="calculator">2_800 / 7</gadget>
<output>400</output>

<result>400</result>