There are 1060 seats in a government auditorium. There are 50 students in each class of a certain school. There are 6 classes in each grade. After going to 3 grades, how many seats are left?
某政府礼堂有座位1060个，某校每班有学生50名，每个年级有6个班，去了3个年级，还剩多少个座位？
<gadget id="calculator">50 * 6 * 3</gadget>
<output>900</output>

<gadget id="calculator">1_060 - 900</gadget>
<output>160</output>

<result>160</result>