A square frame with an edge length of 8 cm is just welded with an iron wire. If this iron wire is welded into a rectangular parallelepiped frame with a length of 10 cm and a width of 7 cm, how many centimeters should its height be?
用一根铁丝刚好焊成一个棱长8厘米的正方体框架，如果用这根铁丝焊成一个长10厘米、宽7厘米的长方体框架，它的高应该是多少厘米？
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">10 + 7</gadget>
<output>17</output>

<gadget id="calculator">24 - 17</gadget>
<output>7</output>

<result>7</result>