A desk is 125 yuan, a chair is 75 yuan. Stone Company bought a total of 28 sets of tables and chairs, how much did it cost?
一张办公桌是125元，一把椅子75元．四通公司共买了28套桌椅，一共用去多少钱？
<gadget id="calculator">125 + 75</gadget>
<output>200</output>

<gadget id="calculator">200 * 28</gadget>
<output>5_600</output>

<result>5_600</result>