The average height of the five students lined up from left to right is 148.5 cm, the average height of the three students from the left is 150 cm, and the average height of the three students from the right is 147 cm. How many centimeters is the height of the student in the middle?
五位同学按身髙从左到右排成一排平均身高是148.5厘米，左起三位同学的平均身高是150厘米，右起三位同学的平均身高是147厘米．求中间一位同学的身高是几厘米？
<gadget id="calculator">148.5 * 5</gadget>
<output>742.5</output>

<gadget id="calculator">150 * 3</gadget>
<output>450</output>

<gadget id="calculator">742.5 - 450</gadget>
<output>292.5</output>

<gadget id="calculator">147 * 3</gadget>
<output>441</output>

<gadget id="calculator">742.5 - 441</gadget>
<output>301.5</output>

<gadget id="calculator">292.5 + 301.5</gadget>
<output>594</output>

<gadget id="calculator">742.5 - 594</gadget>
<output>148.5</output>

<result>148.5</result>