The school has 25 environmental protection teams, with 18 students in each team, and each student earns 6 yuan from selling waste products for environmental protection. How much did these students earn from selling waste products?
学校有环保小队25个，每小队18个同学，每个同学卖废品收入6元钱用于环保事业．这些同学卖废品一共收入多少元钱？
<gadget id="calculator">18 * 25 * 6</gadget>
<output>2_700</output>

<result>2_700</result>