student calculates the average of six numbers. The last step is to divide by 6, but he writes "/" as "*" by mistake, so the wrong answer is 1800. So, what is the correct answer?
某学生算六个数的平均数，最后一步应除以6，但是他将"/"错写成"*"，于是得错误答案1800，那么，正确答案是多少．
<gadget id="calculator">1_800 / 6</gadget>
<output>300</output>

<gadget id="calculator">300 / 6</gadget>
<output>50</output>

<result>50</result>