Guangming Primary School has six grades, each grade has six classes, and each class has 45 students. How many students are there in this school?
光明小学有六个年级，每个年级有6个班，每个班有45名学生，这所学校一共有多少名学生？
<gadget id="calculator">6 * 6 * 45</gadget>
<output>1_620</output>

<result>1_620</result>