The sum of the sides of a cuboid is 60 cm, the width is 5 cm, and the height is 2 cm. What is the length in cm?
一个长方体的棱长之和是60厘米，宽是5厘米，高是2厘米，长是多少厘米？
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">15 - 7</gadget>
<output>8</output>

<result>8</result>