There are 6 female students in Class 1 of the fourth grade, and their average height is 140 cm. If one of them leaves, the average height of the remaining five will be 135 cm. May I ask: What is the height of the girl who left?
四年级一班有6名女学生，她们的平均身高是140厘米．如果她们当中有1人离开，剩下5人的平均身高就变成135厘米，请问：离开的那个女生身高是多少厘米？
<gadget id="calculator">140 * 6</gadget>
<output>840</output>

<gadget id="calculator">135 * 5</gadget>
<output>675</output>

<gadget id="calculator">840 - 675</gadget>
<output>165</output>

<result>165</result>