A toothpaste box is 21 cm long, 5 cm wide, and 4 cm high, what is the sum of its sides in cm?
一个牙膏盒长21厘米，宽5厘米，高4厘米，它的棱长总和是多少厘米？
<gadget id="calculator">21 + 4 + 5</gadget>
<output>30</output>

<gadget id="calculator">30 * 4</gadget>
<output>120</output>

<result>120</result>